Just noticed this thread and your reply,looking at the same myself Tacx Flux from Halfords but pretty new to the smart trainer stuff, does it auto adjust if you go uphill on a course and is it worth buying any good, thanks
I'm very happy so far, but I have nothing to compare it with. Zwift is a bit cartoonish, and has been a bit of a learning curve, but the trainer has been all I expected. I've been on it more in two weeks than I normally would in a month, which is the important thing. I'm going to do some of the training plans, which will provide more structured training than I usually do.
It does increase resistance on hills. Unlike some of the more expensive ones it doesn't have a motor to make it freewheel when you are going down.
ERG mode is a bit strange. It should provide a constant power output regardless of gear or cadence. However I like to overshoot. So in the past if my target was 180 watts I'll go for around 185-190. Erg will see the level sit around 177-180. I'll crank faster to try to go over the 180 and end up with higher cadence and still recording 177. So I have often found myself running at a higher cadence than I prefer. I'm learning I can back-off a bit and still get the same result, but it has taken a bit of time.