I also want to know this!
I keep changing my mind on which to get the full version or the core.
The cassette thing is annoying as it's a bit of a hidden cost, also unclear if you need a front wheel thing for it.
So the full kickr is 17cm wide once folded up. so a fair bit more compact.
I asked some one at sigma, stats aside in real world terms are there any noticeable differences.
Their response was nope, if they were looking at a smart trainer they'd go for the core....
I also want to know this!
I keep changing my mind on which to get the full version or the core.
The cassette thing is annoying as it's a bit of a hidden cost, also unclear if you need a front wheel thing for it.