I am still using blades from a sample pack. I have been using a Treet Dura Sharp for the last couple of weeks and am really surprised how good it was. It started out giving me a very close shave and was very comfortable. It has gotten less comfortable the last few times so I will be retiring the blade. It's just a little below the experience of using the Astra and Feather blades.
I've not had good luck with Treet blades. They caused some irritation for me. Glad they are working for you though.
It's just one of two that were in the sample pack. If I bought any blades in bulk, it would either be Feathers or Astra SP's.
I have some Treets that I plan to try. The Treet Platinum and the Carbon Sampler from tryablade.com which includes the Dura Sharp, Classic, Silver and Double Edge. I'm really looking forward to going through that.