I think it depends a LOT on your taste preference and taste buds.
I have very finicky taste buds, and I can taste EVERYTHING !! I've bought Nic from Nude Nicotine and it is absolutely tasteless, but also the most expensive I've bought.
I also bought Nic from Wizard Labs and the PG Nic was ok, but the VG Nic was yellow and peppery. I don't like peppery at all!! Some do like it, prefer it even. (Not trying to bash WL, because I LOVE them - I'm just going to buy my Nic from NN from now on.)
Check around the forums for other loved suppliers for Nic - I don't think you'll get anything nasty from any of those, but peppery may be another story.