I'm running a few different setups.
1. Velocity with 8mm Ocean. It's light and fast but as Colin said, terrible in the wet. If you have to do a lot of gripping of the rope for ascent, it gets to be painful real quick. I find myself almost always rocking a pantin these days on this setup to avoid the gripping.
2. Tachyon with 8mm Beeline. This is my long rope, and a good all around tall tree setup. I run SRT and dDRT regularly on this line and although it's got a bit of bounce, it performs pretty well and is reasonably abrasion resistant. This is another rope that likes sucking up water unfortunately.
3. Arbormaster Bluestreak with 8mm Ocean. If I had room for only one rope on the truck, I don't think I'd hesitate on this one. Super durable, maintains profile even when wet, doesn't pick, splices easy, price is right. That and my hands don't ache when I have to grip for ascents. Yes it's heavy and it doesn't knot nearly as nice as the double braids (I use tight eyes anyway), but I can't think of any other rope I'd rather have for the broad mix of work I deal with.