New river wheel or greenteeth?

[MOE]

Ive been running CEI teeth on my rayco RG100 for the past couple years. The main reason is I had a couple year supply that came with one of my older grinders that I've kept. I'm about out and am looking at switching over to green like I have in my 8018 or try an new river sanvick wheel and teeth. I've read here that the older sanvick wheels wore quickly but the new rivers are better? The greenteeth on my 8018 have been pretty good in rocky ground. How do the new river teeth and wheels compare overall? Thanks