Recently picked up some GMX's to try in my 270 and was very impressed with the accuracy. They far exceeded the 130 Partitions and were a fare bit better than the Hornady 140's I'd already put to paper. Can't say what they'll do to a deer yet but intend to give them a go this season.
The TSX's have a strong following here but they have proven to be awfully persnickety in my 25-06 Cooper- YMMV...