I wish I had an answer to this question. I use Mobil 1 Wheel Bearing grease on Revolvers, but it's just too viscous for use on auto pistols IMHO. I've used the Possness Warren grease for many years and thought it was the best solution -- not the cheapest, but really good stuff. The past year, or so, I've been using TW25B and it has proven to be superior in many ways. It stays put. It doesn't accumulate crud (like the lithium greases do<i.e. Tetris>). And, it works for longer periods of time than other stuff I've tried -- sometimes, shit happens and I don't have time to clean and prepare a gun the way I'd like to. And, it doesn't stain my leather and clothes like petroleum lubricants do.
I buy the 4 oz. tube of TW25B and refill the needle syringe from it.
For me, it's worth the expense and trouble to use it.
After reading some of the above remarks, I think I'll give Mobil 1 a try on the 1911 and see if it gets me through a match.