So, it's about time to replace this derailleur, it's served me well but honestly the problems never really stopped with GX eagle.
I just don't know which route to take, since I run a helix cassette I could possibly jump to Shimano deoreXT for about $130 while keeping the SRAM chain. It should be compatible, but concrete information is sparce when mixing so many brands.
Even less information is available about the other option, LTWOO TX. Apparently for $50 shipped I can get a 12 speed shifter and derailleur. Every bike shop guy will tell you to steer clear of LTWOO but the stuff I've seen in person felt good quality. I can't find any food reviews on the TX group and even aliexpress shows maybe a dozen orders between multiple vendors. Really my biggest gripe with them is that spare parts seem to be impossible to find, everything seems to be disposable instead of rebuildable.
As far as I can tell there's no ultra reliable mechanical 12speed. Shimano is probably the best I can afford, but the mismatched parts are likely to lead to issues. LTWOO would save me enough to upgrade my brakes but I have no idea if it's just going to be a pain in the ass or actually usable. Honestly I really don't want to buy another eagle derailleur. From day 1 I've had nonstop issues, yet it's the option that makes the most sense to me.
If anyone has real experience with 12 speed outside of the usual setups your knowledge would be greatly appreciated. Sorry for the ramble.
TLDR:
- Just replace the derailleur ($100)
- Upgrade to Shimano ($130)
- (Maybe) downgrade To LTWOO ($50)
My point was never that waxing chains is the perfect end-all solution. I originally replied to a person that said they degreased their chain and only got about 2-3k miles before needing to replace it. From my experience that's due to stripping away the factory oil, and if you are degreasing anyways you are halfway to just waxing the chain.
If you want something to be dead set reliable modern group sets aren't going to be your friend, no matter what you are using on the chain. A single speed chain with geared hub is going to be more reliable than pretty much anything else on the bike.
Waxing has real benefits but it's not always worth it depending on where and how you ride. For instance, the dirt in my area is extremely dusty and destroyed my lubed MTB chain in about 2k miles. Waxing was a massive improvement and has already saved me from replacing $300 worth of chain and cassette.
It's your bike though, and different strokes work for different folks. I fight against cars, not fellow bikers.