Currently I'm using Core ABC and I'm liking it, but does anyone have any comments on long-term use of a BCAA product that they had a lot of success with? My tub is almost empty.

Definitely look into White Label's RECOVERPRO, it has a ratio of 4:1:1, the only other bcaa product which has this ratio is Anabolic Xtreme's AXCELL

Yeah, RecoverPro looks awesome, I think it's only available on Nutraplanet right now though.