No one else has replyed so...
I was deliberating over TTR/TTRE/XRL myself. I eventualy decided to go for the RE over the R. Mainly because of the magic button. Now however having owned the bike for a while I would have gone for the R because of the better suspenstion, and it is a hassle getting hold of a decent sent of R suspenstion for my RE. You have already said you are not intersted in the RE but I throught I would say it is pretty straight forward to fit R suspenstion on to the RE and you then have in my opion a better bike then the TTR or XRL.
As for the XRL then, I must first say I have never rode one. But I have asked many questions about them when it was one my final choices of bikes. The main reasons which put me off the XRL was getting parts in the UK, also getting hold of aftermarket extras, tank, racks, bash plates are really easy for the TTR not quite so much for the Honda.

From what you are describing what you want to do with the bike I would personly find a good condition XR650L...there were a couple new on autotrader-bikes 6months ago or so.
Other than that both bikes have good suspension, both aircooled, both have a good reputation. However only one has a magic button! which if I was using it as a coumuter and trips around europe with the other half on the back then I think it would be enough to perswade me.

Hopes this helps
George