They can be good within the limitations of physics, just don't expect much music in the bass register. You're not going to be that picky if you're on the turbo, so anything half decent is going to be good enough.
That was kind of what I thought - I thought something like JBL control 1 probably suitable (if a bit on the large side compared to the ideal for the room).
Just wonder how good / bad they'd be and whether I'd regret not having something better if I use the system when I'm not on the turbo...
What budget? We have a Bang & Olufsen Beolit 20 which has amazing sound for the size and price. Battery powered too so you can take it with you as well
They can be good within the limitations of physics, just don't expect much music in the bass register. You're not going to be that picky if you're on the turbo, so anything half decent is going to be good enough.