Quote Originally Posted by roguedog View Post
I've got SPDs (Shimano 520 or 540).

Positives
I like that they're double sided so I don't have to find the clip in side.
I like that the shoes allow me to walk around pretty comfortably. When I commuted, sometimes I'd forgot I had 'em on until hours later!
They're cheaper than full on road pedals.
I like their durability. Their built to take the abuse of mtn bike riding! Note: I've not had road pedals so this is just my perception.


Negatives
A bit heavier
You don't have as much surface area and thus might find it less comfortable thought I've never had a problem.
Less surface area also means not as efficient in power transfer likely.
I am a big believer in MTB or Touring shoes because I don't feel like slapping cleat covers on/off road shoes every time I walk into a bathroom.

I also have the Shimano M530's because I was a big chicken and worried that I might never go fully clipless. Plus, the big dual sided platforms give me tons of time to clip in while pedaling. I am glad that I started out with these.

But, now that I have been going clipless, I am starting to wish for the speedplay frogs from my road bike because a lot of TE members like them for their float and ease of clipping in/out and they are much lighter than my huge
Shimano M530s.
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2012 Specialized Amira Elite, upgraded carbon handle bars, Jett saddle 143mm switched to 145mm 2012 Selle Italia Max SLR Gel Flow saddle
2010 Santa Cruz Juliana with R kit and Crampon pedals
2011 Specialized Ariel Sport,suspension post,Serfas Rx Women's Microfiber saddle (sold)