try a search, there have been many good recommendations I just don't know offhand because I don't use any. Also the general recommendation seems to be, if you have broadband, try a bunch form versiontracker.com and see which you like and which has the features you want.
what about NetNewsWire? no one mentioned this one. it has a free Lite version that's great too. and the pay versionhas blogging for a bunch of APIs and some other cool stuff. or am i just high on glue and this isn't even the sort of thing you guys are talking about? in anycase:
I like Hogwasher a lot. It's got a sixty day free trial, but after that it's just too dang expensive. Like fifty bucks! Sheesh... what are they thinking? I'll be going back to MT-newswatcher in 22 days. If Hogwasher was $20, I'd buy it in a heartbeat.
No doubt that Thoth is the best newsreader on osx hands down. It is easy to configure and a pure joy to use. Well worth the 30 bucks in my opinion. I even prefer thoth over forte agent reader on my windows xp box. It is really that good.