No experience with vfc but I was super impressed by the we. Really good range and accuracy and supposedly the most reliable gbbr out there. I have a few teammates that have been running them stock for years with no issues. Only problem is that there are no trades, no fake rounds in the mags and the outer barrel can be a little wobbly.
There's a pdf out there of fake rounds for the we, I've printed them and put them in the magazines and it actually looks pretty decent.
http://www.intrudershop.com/mmc/aug/...6BULLET-V2.PDF
Outer barrel wobble can usually be fixed by shimming the barrel nut or with this nifty gadget:
http://fg-airsoft.com/fr/canons-et-a...is-sombre.html