My uterus is tipped/tilted, and I was informed at my first pelvic exam over 10 years ago! I own the Smart Balls, and I don't have an issue with them hitting my cervix funny or anything like that.
I went to Fun Factory's website, and I couldn't find anything on SmartBalls teneo uno. A search on Google brought up websites only outside of the US. I might have to order one of these... sounds like they've solved some of the insertion issues and concerns about the connecting bit by having just one ball (hence the "uno" I suppose!).