Hey Scy,
I am not an expert by any means. However, I believe the consensus on brands would go something like Flavor Art, Inerawa, Capella, Flavor West and TFA. Those I would and have used. That said, I don't think it is really the manufacturer as all those have some great flavors. Also the matter of personal taste and mixing percentages come into play. I personally made my first couple of small after much research of
reviews, recipes and consideration as to my flavor prefs (can you say "OCD")

.
Good luck and happy hunting...oh yea, and HAVE FUN!