Used my CC. I'd rather not talk about it as I've raised enough stink about it as is. .
Not sure of your situation, but if it was me...fight for it....but I'll drop the discussion there.

Opinion -- you made a good call on the Spinner, stick with it. Are there other options? Sure. Have I tried them (minus the VV kGo)? Nope. But short story is that I'm pretty darn happy with trying the Spinner's.
We've been kGo people for the past many months. We've bough a ton of the original kGO's and loved them and put them through their paces (silver metal middle). We bought a couple from a different vendor that were Gold. Not sure if they were different, but they seemed more klunky -- more stuck buttons and things just "off." We bought a few of the newer kGo's -- a bit longer and with the "hard" button. We're not really a fan of them and the button is annoying. We bought one of the VV kGo. Not the capacity we'd like the recessed button actually isn't that annoying, but it combined with the limited life is. There's a part of us that would love to get our hands on some of those original kGo's still though.
We bought three of the Vision Spinner's a few weeks back after a few batteries started to show their age. After a couple days adjustment I'm a fan. I usually try any new toys and then introduce them to my better half. There's a part of me that initially wished for the 900mah (or were they 1100mah? regardless...) original kGo size and "soft" button but after a few days I'm really happy with these and ready to order a few more. You find your general voltage and leave it as-is, but it has been nice to play with here and there.
If I had one tiny gripe it would truly be a tiny one. The button is pronounced, it isn't almost flush like the VV kGo, but is recessed more than the soft button kGo's. Why do I not like that? If you put it on a desk that isn't level....it will roll vs. the button acting as an inadvertent kick stand of sorts with the old kGO's....but I think I'll live.
We bought ours from Hoosier who we've never had an issue with and is always quick and reliable for us (we're in NJ). Not sure who you bought from initially, but if it was someone else, give them a shot.