In reply to Blue Yonder:
The variation in this TX range is weird. I'm on my third pair of TX4 shoes. I thought I'd get a pair of TX5 gtx shoes, thinking they would be a similar fit, etc. Very disappointed with the lacing system (TX4 is brilliant); a lot of faff to get a good fit. The tongue is bulky, with unnecessary 'reinforcement' (again the TX4 is just about perfect). Fit seems more snug, so rubs, whereas I've not had a single blister with any of the TX4.
Sorry, I know it's not comparing the boot; just needed to vent...