freebitco - gives a free spin every hour, with up to $200 as the top prize ( 1/10k ) - that ive never hit in 4 years :P
has multiply - i like to do 100 spins, at 34x multiplier - 3 hits = profit of small portion.
started 70k, done 5 batches, no avail ( 2 / 3 x 2 ) ((needed 4x3 or above. went 'full retard, and upped multi to 500x, no avail. went fuller-tard, done some 'fk it, go for broke'
result +100% start balance, and several lottery tickets also :)