i use them. i really like them. i like shooting groups and they don't tear up like other vanes i've used. its amazing really, how long they last. i put a bit more offset on them than i do a 4" vane, but when on the arrow it looks about the same because they are only 2 inches. i don't helical, but that's just me and not popular opinion. if you do a google search on them you can get 2 packs of 100 for around $28 from eagle archery. if you just buy 1 you have to pay like a $3 or $4 handling fee. if you spend over $25 you get free shipping. i've looked at other places and $14 for 100 is a bit high, but once you figure in shipping other places cost more. the first thing i did was buy a 36 pack to see if i liked them and when i was suddenly spending 0 time at the fletching jig i decided i really did. plus they fly great and its easy to see your arrow spin correctly or wobble.