Yes, I like TAC. It started off with very good reviews from a few that do a lot more reloading than me. Last summer I had a few issues with an AR in SD after a fair amount of rounds fired with older H335 loads. There may of been some lubrication factors also so I'm not saying it's all powder. Either way the action was dirty. I did have newer TAC loads with me. I use TAC in the 223 & 204, usually 50-55 grn bullets in the 223.
My chronograph showed in the 3240fps range with the 52grn out of a 24" bolt gun. I think the load was 25 grns TAC.
When looking down the bore after some 204 rounds I could hardly see any residue at all.
I ordered 4lbs from Midway recently since the locals usually don't have it in stock.
Just some of my anecdotal evidence/experience coming over to TAC. Yes H335 has been a main 223 powder for a long time but nothing wrong with trying new stuff.