Shimano M770 XT Pedals

First of all a big hello as this is my first post 
I was just wondering if anybody owns the Shimano M770 XT Pedals and what they think of them? More to the point if theres any difference between these and the Shimano M540.
I currently have the M540'S now on my old bike and like them alot, im getting a new bike this week and thought about asking the shop to chuck the M770'S in with the bike, but from what i can see theres no difference between them apart from having xt splashed on the side, they appear to be the same weight too. If theres no difference i'll just take the M540'S off my old bike and put them on.
ta

I was just wondering if anybody owns the Shimano M770 XT Pedals and what they think of them? More to the point if theres any difference between these and the Shimano M540.
I currently have the M540'S now on my old bike and like them alot, im getting a new bike this week and thought about asking the shop to chuck the M770'S in with the bike, but from what i can see theres no difference between them apart from having xt splashed on the side, they appear to be the same weight too. If theres no difference i'll just take the M540'S off my old bike and put them on.
ta

Giant - https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/334272_10151115280715087_1148897730_o.jpg
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I've bought a new bike....ouch - result
Can I buy a new bike?...No - no result
Any Shimano SPDs are good though.(Except m424s.......)
2010 Giant Defy Advanced
2016 Boardman Pro 29er
2016 Pinnacle Lithium 4
2017 Canondale Supersix Evo
Ive spent about the last hour on google reading reviews on them and everybody rates them, infact nobody had a bad thing to say about them.
Pedals ordered and i just need my new bike to hurry up and come now