Nice write-up once again MC! The 545's sound very nice. If I could justify having them, they'd be nice to have. Then again, since when have I needed any justification lol!
Btw, I now also have some DT1350's in my possession (since yesterday). Initial impressions are that they sound stunning (even without burn in). I was a bit worried due to what you said here in your T51P review:
It's strange because so far I am feeling exactly the opposite of what you said above regarding the two! I think that the T51P's (with 60 hours of burn in) do sound really great, but occasionally I hear a bit of congestion/boominess due to the larger mid-bass, and sometimes they sound just a touch less transparent to me as well (relative say to the mikros 90's or the dt1350's), and I find myself thinking about that at times. But with DT1350's, I am more or less just listening with slack jawed amazement at how good they sound. So go figure!
Comfort-wise there is no competition - the T51P's are amazingly comfy, and as an overall package they are very good. I will have to work on the DT1350's comfort a bit to see if I'll be okay with them.
Anyway, that's where I am at right now. I'm going to now let the DT1350's get 50 hours of burn in before I do some serious comparisons. And then I have some decisions to make!