I am slightly biased....
I love GIXER's for me the light weight was an obvious advantage as easier to handle (especially with not having a great deal of strenght in my wings)
I never tired of the extreme sport look and feel....its truly awsome

always had that cheesey grin when i turned the key and started it up!
I would say if your planning to commute for long periods it may not be too practical due to strain on wrists, but I soon overcame this.
I added a number of electrical bits to my K7, Radio comms system, heated gloves and socks, & charger for my phone and thought this would put strain on the battery (or rectifier) but it didnt have any issues

for my next bike I am strongly considering a Triumph Daytona (a little more pricier...), I would have got another GIXER but wanted to experiance something different.
As for Kawasaki's there '
ok' I guese but just dont have that edge for me, in terms of budget, I always find that they are reasonably priced tho