Which VR Trainer?

Hello,

I'm trying to pick a PC driven trainer to get me through the winters.
Cost is definately an issue (ie., new computrainer is just not in the
budget). I've been looking at three options.

1) used Computrainer PC1 along with NetAthlon. Don't know what the
final cost of this would be (any thoughts?)

2) Tacx i-Magic. Approximately $600. This is compatible with
NetAthlon so for an extra $75 plus the cost of different courses I'd
have that expanded capacity.

3) RealAxiom trainer from Performance Bikes. Approximately $515. This
is not currently compatible with NetAthlon. I think this is made by
Elite in Italy and other Elite models have been compatible so it's
possible this will be too in the future.

I'm tempted to stick with something compatible with NetAthlon because
it offers more courses than either the Tacx or RealAxiom on their own.
I think that all three options give me plenty of ability to create
custom workouts and to track performance history.

I'd be curious to hear input on any or all three of the options
including the usefulness of NetAthlon. Just so you know, my typical
workouts would include 40km rides with intervals (combination of
"hills" and speed) and 80-120km 150 BPM rides.

Thanks.

Matt