I have the 2.5 dfv loupes and they are alright. If you order, and you are in practice, you can still tell them you just started and negotiate the resident rate, that's the only reason I went with them. My plastics mentor recommended getting the 3.5 mag loupes from surgical acuity about 1400.00 he said they are the best loupes he has ever had and he has bought just about every one you can imagine. If I had to do it over, I would probably go with those if they could give me a discount. I do sometimes wish my loupes had a little more mag, but they are sufficient.