actually, the buy in is pretty important. i boosted my comps by buying in for about 3x as much as i was willing to lose, so $400 for a $10 flat bettor
remember, slots includes video poker, which can be just as good as bs blackjack, as long as you know how to play and you pick a good paytable, but these days the paytables are horrible at most places, and you sometimes have to go to $5 ($25 with the highly recommended max bet) just to find anything over 98%, but back in the 90s, it wasnt uncommon for there to be +ev paytables such as 100.76% with deuces
$300? i hope you can find $5 games, as you could easily lose $300 in less than 10 hours with $10 games
yes, video poker will earn you decent comps, but make sure you know how to play and pick a good paytable.. i highly recommend vpsm, it is the king for vp, nothing it cant do, and its $30 where in chicago do you live? i live in glen ellyn, and i go to nw indiana to play, as the casinos here suck, and arent 24 hours, but i heard harrahs has a game under .4%, but i dont believe it. if you do go to harrahs in joliet, and they do indeed have like a .36% house edge, can you view the discard tray, and are you allowed to jump in/out?