I am really interested in a Husky SM, but I can't figure out which would be best for me: SM450R, SM510R, or SM610R. I want something for a 1000+ mile trip that will be reliable, require the least amount of maintenance, have a low seat height or can be easily lowered (I'm 5'4"), have a smooth ride with little vibration, and enough power to cruise at 70mph for extended periods. I sat on a 610 once, and I was able to reach the ground (barely). I've read good reviews on them, and they sound reliable. I don't know anything about the 510 or the 450. I currently ride a Honda CRF230L, but I have experience on bikes as big as a 750. The 230 is great for what I use it for, but obviously it would not be ideal for a 1000+ mile trip where I need to ride at a decent pace and occasionally get on the freeway, hence the need for a second (larger) bike.