Hi Rob,

When I placed my order for a 12" i3v back on Dec. 2nd I went with the 1.75mm Hex nozzle, only because my first printer, a Printrbot Simple, came with one and I've been using it without any problems for a year now. I am curious to know more about the 3mm as well but from what I've read here and elsewhere it sounds like they both work well. It may come down to personal choice... BTW, did you order the 3mm Hex nozzle?

Just my two cents, before taxes...