Just bought myself an early xmas present with the Tacx Fortius setup. Can't say how good it is, flippin fantastic (with cost ignored as it ain't cheap!). Takes a while to setup and get running etc but once done the results are really good. And then there's the RLV riding, so impressive, got a tour up the Alps planned for the weekend then after you can spend ages going over your performance data etc 8)
Don't get me wrong, there's nothing like being outside for real but when you have an injury like me now or the weathers rubbish etc you can't get a much better training tool and with the RLV it almost makes it enjoyable, well almost 😆