@bellan 
I have made my proposal available as vadler/53X-muonSelectorsFix. Could you take a look, please?
Since the "set(Improved)BestTrack" functions are called in the PATMuonProducer *in any case* now, the result might be even more consistent.(?)
The attached plot ![besttracktype](https://f.cloud.github.com/assets/4622453/1081134/b730d57c-1571-11e3-8e0b-31ae5a7fcc17.png) shows the 'bestTrackType' data member in a) blue from your original commit and in b) red from my proposal. The 'bestImprovedTrackType' remains identical for both (produced with PhysicsTools/PatAlgos/test/patTuple_onlyMuons_cfg.py).