Well on the Z, I sometimes have suspend issues. Some apps work, others fail miserably. I still haven't been able to do any compiling on the device. They have a convoluted build system called bitbake, to compile apps you have "recipes". The distro is still pretty much a work in progress. You won't have to hildonize anything because they don't use the hildon gui, it's gpe. I've not seen any how-to's on installing on a Nokia though.