I just saw the Logitech MX revolution for £35.00 ($70) including shipping. Normal MSRP for this is £50+($100). I was wondering if this is a good deal or if there is something cheaper? I like my V270 which i use with my MBP but now i have an iMac i'd like to get a full fledged desktop mice for it instead of pairing and unpairing the mouse amongst both computers and the Mighty Mouse is NOT an option. What do you guys think?