POLONIEX vs. BITTREX - Can Either Truly Be Trusted?

About 2-3 weeks ago I finallly got fed up with Poloniex after the "Insider Pump & Dumps"  amongst other issues like the site crashing at the most convenient times for them to make money. 

Updated 1.1 : Thanks to @staffnsnake Poloniex did credit BitcoinCash afterwards my apologies - 

However how much money did they gain by not paying out at the time of the fork? Or how much did they lose? 

<Then after the Hard-Fork BitcoinCash debacle where they stole all the BitcoinCash from Investors who had some BTC stored on Poloniex.>

BACK TO THE MAIN POINT: 

After much consideration ang input from the STEEMIT community - I decided to slowly move my funds over to Bittrex - hesitantly. 

I should have prefaced this post stating that I store most of my coins in cold storage wallet's provided by the cryptocurrency itself on their platform -

Nonetheless - I deposited about only $200 or so into a Bittrex acccount - got it verified and began some trading. For the first few days it was like night and day - I didn't come across hardly any Pump & Dump trading and withdrawals and deposits seemed pretty fast.

Then about 3 days ago when NEO, OMG, PAY and LUN began to soar - I had encountered some very concerning issues.. 

During peaks of the Altcoins - Especially NEO amd OMG - when I wanted to sell off some coins to rebuy at a dip or purchase a different coin - I ran into all sorts of "Wallet Under Maintainance" issues - not allowing me to withdraw funds.. 

I completely "get it" when a wallet is under maintained for an hour or two and the company itself does not allow deposits or withdrawals - but it seemed very coincidental that the message would appear only during a peak - during a dip - the "Wallet Under Maintainance" suddenly dissappeared.  

Check out the screenshot below of an instance when 4 out of 5 coins in my Bittrex Portfolio suddenly were all under maintainance at the same time when NEO was at a major Dip.

Below is another instance about 30 minutes later when after the "Wallets were restored" they again went under maintaince.

I believe this was occuring the most on this past Saturday/Sunday - I should have taken more screenshots.

For now - if nobody else has witnessed these issues on a regular basis I'm willing to chalk it up to maybe they were under maintaince and let it go..

However... 

I have one other gripe with Bittrex that I haven't noticed on Poloniex or any other trading site.

Dun Dun Duhhhhh... Attack of the Bots

While dabbling with some highly volatile coins that were up 150-200% and obviously getting pumped - I noticed that for the first time - The trading Bots truly beat me!  When I was up 40-50% on a coin during a "Pump and Dump" no matter how I tried to sell off the coins for BTC - By the time inputted an "ASK" price below the lowest ask price - before it was able to be shown on the screen - the BOTS blocked me by undercutting it by 1-10 satoshis with a size of 4-6 BTC. 

After numerous attempts to cancel the Selloff and again undercut the lowest "ASK" I was instantly bombarded with multiple lower prices - And as soon as I deleted the Selloff - The BOTS blocking "ASK" prices shifted back up - I had to literally undercut them by 10% in order to sell some of the coins.

I know that trading bots play a large role in Exchanges from the Stock Market to Crypto Exchanges - but they typically do so in a manner to buy at the best price and sell at the best price - not prohibit other traders from selling.

Like I stated - I've only noticed this with the "Pump and Dump" coins I played with but it really made me angry - and I thought - how could a BOT know exactly what price I was going to input as a sell price prior to it being shown on the screen? 

Is this a case of a Bittrex Bot? I typically get a .5-1.5 second lag time with posting a sell price and quantity - but BOTS as far as I know cannot read minds and cannot intercept the lag time in postinb knowing exactly the price chosen - 

And the biggest kicker was - The trade total ASKx QTY = < $5 worth of BTC !!

Please shed some light into Bittrex for me - Is it safe to trade on? Do the Wallet Maintanance Warmings show up only during times to benefit Bittrex? And is there a way to stop the Bot-Blocking selling? 

Lastly can anyone recommend a better exchange than Bittrex for a US customer to use? If you can - or if you can provide some insight into the problems I've encountered I'd greatly appreciate it.  I am still a novice in Crypto Trading compared to most and my Bankroll is still minimal - but this type of behavior will only dissuade new Crypto traders from getting more involved in Crypto and helping to build a stronger Crypto Community 

MUCH LOVE - @krytonika