I went through this first with RTV-900, then with my RTV-XG850.
For the -900 I went with ITP Blackwater Evolutions to replace the Craptyles. The most important thing about them for me was the 8 plies, aggressive tread, 8 plies, larger size (25 to 26) and having 8 plies.
When I bought my -XG850, the requirements changed a bit. Since the 850 was faster, I could take it out my local 1, 1 1/2 and 2 lane rural roads around my farm (~25 mph vs. 40 mph) i.e. Joy Riding. Also, the asphalt really wore down the ITPs (I swapped them out from the -900) and they were really worn.
Hence, I picked the Tusk Terra Bites. 27 vs 26 -11-12, still 8 ply, still a fairly aggressive tread but more asphalt-friendly.
The only downside to the Tusks is the fact AllTerrainOffRoad closed and I couldn't order from them anymore.
You need to understand your terrain you're going to be riding on. Simple but stupid example: You don't want to pick Sand Paddle tires for asphalt; nor road tires for extreme off-roading or mudding. This concept should be obvious, but I thought I would specifically mention it.