Tacx vortex, personally I would not even bother.
I have had my Vortex for a a year and a half. Within the first 3 months the trainer developed a loud clicking noise at low levels of cadence.
I went through the Tacx help line and after I sent in a video of the trainer making the noise they sent a replacement mid part with no questions asked. I should have asked for my money back there and then!!
As there was no obvious performance problem with the trainer (only noise) I did not change the midpart until well after the 1 year warranty was up. I was sent a you tube video of how to change the midpart which I followed.
On changing the midpart and plunging the unit back in everything seemed fine and started my workout. Halfway through the Zwift beasting a hell of a noise came out of the trainer, like there was 2 walnuts getting crunched up inside the trainer.
On opening the trainer all the fuses and components of the motherboard had been striped off.
I have contacted Tacx to state my case indicating if the trainer was 100% in the first place this would not have happen.
Tacx reply: you can always buy a new motherboard.
My money will not be going on any Tacx equipment, ever.
Very poor show, I think.