I ride about 30% dirt but I'm looing for a 50-50 bike since I'd rather have it work well on dirt. Here's what I didn't like about my 650L: 1) I felt like the powerband was narrow in that I was either revving the crap out of it and didn't like the vibration or I was lugging it and it felt like chunk-chunk-chunk. 2) Akward dirt handling. High and heavy 3) Riding position forcer me right up against the tank and the handlebars felt like they were right up against my chest. I'm thinking of getting a DRZ400 or legalizing a 650R. Will either of these bikes have and engine unlike the 650L's? Or is that the nature of a single? If I got 50mpg on my L, what does the R get?