Originally Posted by BostonFixed
Really?
"The joint is too unstable" I'm not sure exactly what this means, but a properly installed square taper crank arm WILL NOT loosen. This mean using a torque wrench, etc. Checking the bolts is also a good idea periodically.
I don't own any high quality cranks, in fact an old set of shimano 105 cranks are my highest quality set. I wouldn't really call those high quality. I'm not sure what you mean by "decent reliability", but all of the cheap square taper cranks that i've used have worked great with no problems.
No issues here either and that includes alot of less than top drawer stuff, in long term use. Personally prefer it to octalink and have no actual experience with isis.