Upgrading (due to write off) and just don't know where to start. After some thought know I want to spend around $5000 on a reliable bike, 600cc-ish with 4 cylinders. I am short, so going with a low seat and would prefer a more upright position. No supersports here, as long as I can attach a screen naked is good. I bow down to the wisdom of the netrider forum, any thoughts??