Welcome to the forum, willy!
The TL1 center appears to have components (tweeter and midrange) with similar materials as those used in the Monitor 60's. The TL2 and (especially) TL3 start to use different types of drivers. So, the TL1 is your best bet, I think. Auto calibration can really help balance out speakers - at least it has in my home, so you might get away with any of those.
I'd suggest that you also contact Polk directly if you haven't already, as they may know better.