I use this Suzuki Bandit 1200 perhaps the most amongst all my options. It's powerful, simple and just great fun.
Fantastic engine and gearbox, and biking as it should be. Ballsy and exciting.
I also hire this one out.
New chain and sprockets needed at about 18,000 miles which cured the harsh transmission noise. At 25,000 miles now, a slight rattle when cold tells me a new cam chain is due soon.
Still cannot beat the sheer grunt that this motor delivers from just 2-3000 revs.
New cam chain now fitted and she's running smoothly and quietly again. Still serving as a reliable hire bike.