Same with me, as I think I mentioned upthread. Except for one thing - I do find water in the Adams water catcher, but it's a small amount compared to...
The advice above is far better than any I can give but my E3 valves have no issues. I did flush them out a few times when I first received the horn....
My dad taught me the "polish your pistons" trick when I was in middle school (he was a band director). Sometimes the issue is a build up of "plaque"...
I saw your reddit post. Interestingly, on trumpetherald there was a somewhat similar case where someone kept pushing Trent to discount an instrument...
Then i would definitely go for the Adams. It is easier to play than the other options you mentioned (imo). And durability is good too. Lighter Adams...