I know what you mean, that cheap wobbly feel is one of the reasons I don't often use push/pulls. Having said that, the push/pull on my PRS feels nice and solid - but their standard pots are surprisingly flimsy.
It's actually really difficult to get pots which feel "just right". Everyone always says CTS are the ones to get, but I find them annoyingly stiff - I like to use my little finger to adjust tone and volume, but the CTS pots on my Tele and Tokai SG are impossible to turn with one finger! Maybe they loosen up with use and age.