Ive finally decided to get another street bike. Ive been out of the loop on whats good. My last street bike was a 96 gsxr 600, then i rode dirtbikes for the past 3 years. I liked my 600 back then and recently rode my friends cbr600 (he did some tuning work) and it felt great, i dont know if i should go with something bigger, it would be primarily to commute 100 miles a day without spending $35 on gas a day. Whats a good used bike to look for thats not too old?