they are decent enough bikes but will seem like a bmx after your zx6r , I very nearly brought one a few years ago but after doing abit of research I ended up with a Yamaha virago 535 as you seem to get more for your money.
Its a small cruiser and like the virago it's not very exciting to ride but will do it's job, I did 3000 miles on my virago and whilst I couldn't fault it I can't actually recommend it as it was just so bland, I suspect the ls650 would be the same.
I brought a few small cruisers before buying my suzuki volusia and with hindsight wish I'd just just jumped in and brought the full size cruiser in the 1st place.
That said Iv never lost money on a cruiser or had any difficulty selling them.