I've not tried either, but you would want to decide what you're using it for. The bb3 is pretty short and only has a taper for 10mm glass. This is would be great for discreet hits or using on small glass bubblers and such. I myself don't like short stems because of the loss in cooling. The rattle is short too but the beads are meant to add extra cooling, but there isn't a ground glass joint for paring with a bubbler. Both have airholes if that is important to you. The bb9 is longer and has the option of 14mm glass too. Some folks find the beads to clog up from reclaim and lose the fun of them rattling around.
SP has a bunch of glass options and trying a few is fun and part of the GAS syndrome. Most of us have a drawer (or two) full of all sorts of shit that have fallen in and out of favor. Their gnarly stem is a variation of the hula stem. It looks cool but it is pretty long.
You don't know until you hold it in your hands, but some glass is cheap Chinese shit glass, not boro, and breaks easily. I bought one of the little finger adapters from SP which I found to be thin, light glass and the ground fittings are poorly made.
Some other great, thick glass options from trusted sellers are DDave's classic water wand (no airhole):
Now redesigned to offer the same reinforced insertion point for the VapCap Tip as seen in the Custom Short Waterwand! Why? Ever wish your VapCap were a desktop vape? Need a VapCap vong? Wish you could repeatedly use your VapCap with waterpipe and friends, but your VapCap gets too hot? Looking...
www.ddavemods.com
and RWW's anelli stem (different lengths):
The Anelli Stem for the Dynavap Vapcap. The 3 "Rings" cool the vapor while giving the stem a unique feel.The large, raised carb is simple to locate by touch. An interesting piece that can add to anyone's collection.
www.ebay.com
Have fun and welcome to the community. Let us know how it goes.