I currently ride a 2006 Sportsman 700EFI and am thinking about getting new XP. I know the 850 will kill my 700 but how about the 550? I have not decided it I want the 850 or 550. I really do not need more power then the 700 I have but I do not want to go down in power either. Anyone have any comparisons between the 700EFI and new 550XP?