Bodog has way less player traffic. I think the software sucks (although a bit better than awhile ago) - - ie. the HandHistory (last hand) is the absolute shits. Software also seems to mess with my computer (if you search thru the thread on here about Bodog, the rep. from there (& other members) will describe the technical reasons behind this (a bit more specific eg., I can play on multiple sites at the same time, with 10+tables running and NEVER have a problem. Add one Bodog table & I've gotten lag problems & freeze-ups that have cost me dearly).
On Bodog I believe you can only play 4 tables at a time.
As far as more badbeats?? Pretty sure the RNG on all sites is good.
Bodog has just about the weakest micro players (SNG & Cash) I've ever seen on any site (and have played on ~10 sites, 6 regularly).
Do I play on Bodog? Nope (well.. rarely & only for the occassional priv. mtt but did play a handful of 'beginner sng's' when they gave me a free $10 to try the site). I suppose if I was into 2 or 3-tabling some micro cash tables OR sng's I'd consider it.... maybe.
Bodog has some 'beginner sngs' where top 5 of 10 get paid, similiar to a Double-Or-Nothing but there's a increasing payout scale. They are VERY EASY to cash in and the players play REALLY BAD. For sure you could build a small roll from them (it'd be better if you could 10-table them, because they're very boring aside from watching all the humorous/bad play in them).
Personally I believe Fulltilt is superior to Pokerstars
(& all other sites).
If you were planning on playing med.-high buyin MTT.. Pokerstars would be good (same for SNG's $16+... I don't like the micro SNG's on Stars).
If you give more details about what you're looking for in a pokersite, I'm sure you'll get more detailed answers.