I just got back from a week in Mt Kos NP walking from Guthega completing the main range circuit and a few side trips.
I had the TT Notch (replaced a Macpac Nautilus) and bought my sister in law the TT Moment DW. Both tents were great, I fell in love with the Moment DW offering that slightly simpler and quicker time to set it up and pull it down, and the ability with the optional pole to make the Moment DW a free standing tent. One other advantage I was envious of was the Moment DW was slightly wider in the middle than the Notch.
Having said that, I still love my Notch for its light weight and simple set up (provided you use walking poles).
Overall, a big thumbs up for both tents.
Regards Ian.