They're great museums, but I still have mixed feelings about them. The thing that bugged me were the doors that were taken off using a hacksaw, the protective covers inside that were screwed to any bit of panelling they could find, the fact that some of the older types up on poles were not accessible due to technical issues (I read that as 'too far gone from corrosion'). I suspect that they will get to a point where corrosion will kill off all of the mounted aircraft, as maintaining them up on those poles will be a nightmare.
Sorry, just had to get that off my chest. I can still recommend a visit to both Speyer and Sinsheim!