I haven't tried either one but the Mini looks like it has potential. I think the SpinIt misses the mark but they supposedly won an award for the design. They say that the SpinIt has a design that is more hygienic but I disagree. The drip tip on the SpinIt is built in. The Mini is top fill and the drip tip comes off so it should be easy to wash --and that's more important for good hygiene. I think the SpinIt is just another gimmick... with more parts that could break.
If you get them, please share your thoughts with us. I'd be interested in feedback on the Mini at least.