RSA23c (Vintage 30) RSA31c (G12H30) JRT?? (Greenback) They all sounded great and could be dialed in to sound very similar. The RSA31 was much darker than I would have imagined and the RSA23 had the most gain on tap (of course). But I honestly feel these amps are overpowered for 1x2 combos. Had to back down all EQ's to keep it from being overly woofy and bass heavy. I think a head and 2x12 would be just perfect. Still, nothing grabbed me to make any changes to my current setup. You never know when you're gonna plug into that next magic combination ya know.