I am not sure what kind of wheel I have.
It definitely works, it's just REALLY fast and I can't draft fast enough, so I end up with thick, over-twisted yarn. Plus, it only has one small bobbin and a small orifice. I have no intentions of getting rid of it, but I get frustrated with it. You know that weird, tingly, sweaty feeling you get when you're frustrated? Haha, maybe it's just me. But I have yet to master it.
I'd love to try the Louet before I commit but it's a few hours away so unless there's something dreadfully wrong with it, I'm kind of committed to it if I make the trip.
I have learned a lot more about the Cassandra (the maker has a forum on Ravelry and youtube videos which have proven insightful) and am leaning in that direction. I think.
No idea why they use PVC instead of wood - it doesn't make sense to me, either! That said, the maker (John) is pretty active in responding to questions and has a valid reason for everything he's done in creating these wheels, so I'm sure there's a reason for it. Or maybe it's just a cost thing. On the description it comes with 4 (or maybe 8?) bobbins so I guess a cheaper bobbin keeps the price a bit lower, which I can appreciate.
Ah - here's the bobbins: