Streamate because I don't like the extra work involved in having to be entertaining in free chat every time I log in.
Sometimes I'm fine w being funny and entertaining, but other times I like silence and brief small talk, especially if it's not related to anything directly sexual. So a private based site suits my personality and sexuality way better. I also prefer to interact with guys who are very busy, and purely about cumming, running, and getting back to what they need to do, for their own personal lives. So I love that site. Sexually those are more the type of guys I can relate to, so stream mate is perfect for me.
I'm not shy sexually, so I like to get straight to business, which also makes SM the best site for me.
I admire the models who work token sites, and I know they have the potential for way bigger payout, but I just could not maintain such an entertaining persona. I'm too introverted and blunt for that to come naturally, and to be fun for me.
ETA; Also I'm inpatient. If I'm in the mood to see the dick or cum, I want to see it and cum now. I can't handle waiting 2 or 3 hours to make a goal. Probably ADHD there.