Star Sidewinders hands down the best bang for your buck in golf grips anywhere. about $2.25 a grip, durable, perfectly round, above the curve in rain and humid weather. Don't really see me going back to anything else at the moment, looks like 2 yrs tween changes compared to 1 with anything else I've had last 10 years. And I play without a glove.
Pro T vibration resistant also not bad for the money.
Good old GP Tour Velvet (mid-size) for me. I hit balls about 3 days a week and play on the weekends. I re-grip about twice a year and at $1.85 a grip that means I spend about $37 annually. They're good to go between re-grippings with some soap and water and a toothbrush.
Don't care much for the dual-density stuff that's been coming out. Certainly not worth the additional cost.
Crossline Lamkins (cord and non cord) are pretty durable as well as soft. I have not tried the Golf Pride MultiCompounds yet but I hear good things about them.
Alex