I'm a big fan of the magura rim drive models. IMHO, tyre drive trainers tend to either slip, eat tyre, or leave a tell tale spray of rubber flecks up the wall behind them. Whenever I've compared things at a similar price point, the rim drive has also been quieter. I suppose rim wear is a risk (its easier to check and replace a tyre than a rim) but as both my bikes run discs front and rear, the rims have an otherwise fairly lonely existence.
If you do go for a tyre model (and plenty do) its worth keeping an eye out for a spare back wheel with a turbo tyre.