You should probably also mention the p2pool downsides. Someone mining at deepbit for a while might not be used to the variance. Don't want to give anyone unrealistic expectations and put them off p2pool once they experience it.
I am willing to give it a shot because I realize the community and market are growing. Deepbit is probably the most convenient (at least in my experience between deepbit, slush, and btc guild). I have read that some people fear that if deepbit grows too large then it would compromise the success of other pools. Please correct me if I am wrong, I am still learning. Thanks. I might look into p2pool sometime this weekend.