BA is the only supplier of VG I use. I've used lots of other vendors over the years, but I find no noticeable difference in the highest rated suppliers and BA.
As said before, it's palm based, no color, sweet, and very little noticeable odor.
If you DIY a lot, I would recommend the 5 gallons, it's more cost effective and will last for 2 yrs at room temperature.
I usually order by the 55 gallon drum, but I also sell a lot of my mixes.
If you go with the 5 gallon bucket, make sure you buy a cheap funnel. Most pumps don't work too well with VG. if you have some disposable cash and just really want a pump, might I recommend using a gear oil pump. They fit right onto the bucket, but are pricey.