I am enjoying both Rift and STO, switching from one to the other depending on the daily-mood. They are two very entertaining games.
Rift team has added a very convenient server status page on the main website. They even give you the exact length of the waiting queues. I must say Rift is certainly the most polished MMO I have ever played from launch.
Rift is better than STO in several ways... but its linear. Which I hate. I hated it in Warhammer too. The character animations are better, the customization is lacking somewhat. The player characters look nothing like the NPCs of the same race... which has irked me since beta 1.
If only Cryptic could change the female characters in STO so they have a sexier walk... or give us the option so we can have either the current walk, or the... you know, the one from Champions.
Rift actually looks pretty good. From what I've seen, it reminds me of some crazy hybrid of Guild Wars and WoW. I'd pick it up, but I already have far too many games on my plate. I was never a big fan of WoW-style MMO's, and that's the only thing keeping me from dropping one of the games I'm playing now and giving Rift a try.