Bet365 has a $50 1st deposit bonus, followed by a $100 october promotion. Both clear at 5x raked hands > $.25. I cleared both in 2700 hands at .10/.20 ($25 max NL). It would clear much much faster for you at .5/1. You can 4 table.

Absolute Poker has a $200 1st deposit promotion which clears at 10x. Clears more slowly (obviously) but it is a large bonus compared to some of what is out there. You can only play 3 tables here.

Both have fairly tight passive players. I've run into some 2+2 bonmus whores at AP 50 max NL. The AP 50 max plays like 25 max because it uses 200BB stacks. Most people buy in for about $20-25. Avg VPIP for full ring tables at both sites hovers around 35%, and also at both sites the game selection can be poor offpeak hours, and I usually wait in line for 15 minutes at AP. AP has terrible software, Bet365 is average, but for the bonuses it is worth it.

Edit: The AP $200 bonus has expired, it's $150 now.