Yes it is best time to buy altcoins. Some research and in my view in Dec 2018 all coins price will be grown their lifetime high price
some coins
TRX = 3$
Bodhi = 1$
BIFI = 1$
GOD = 100$
SBTC = 40 $
some of new bitcoin forked coins not listed in exchangers that coin also will reaches high prices
Bitcoinpro
Bitdollar
Bitcointop