Don't solder to the Atlas track. Solder to the bottom of the connectors, and make sure you have the newer ones with the dimples. I bought a whole lot of Atlas track when it first came out over 20 years ago. I've supplemented it a bit. I have no regrets. I think it's great stuff.
I'm in the same boat as GRJ. Too much stuff. But if I see the right things, I have a twitchy trigger finger. And Vince is back. I can't wait to see what he has.
Gerry