“Already had the 520 RBA in my Cthulhu Mod and thought I would give the 850 a go for some variety, so I stuck it in a BB, it's a bit more restricted DL than the 520, but it's a great boro and with a completely different bell shaped chamber, the Flavour is very good and it's easy to set up, as long as you keep the wattages sensible and wick it properly it's a very good addition to any collection, Recommended”
