Hello,

Looking at getting a single ring direct mount spider less for my sram S2210 crank to run 1x10.

Would you guys go for the absoluteblack:
http://absoluteblack.cc/sram-spiderless.html
Or Wolftooth:
http://www.wolftoothcycling.com/product ... 0-cranks-1

Weight isn't a big deal as their probably similar, I'm more interested in which holds my chain on better during XC racing/other durability and performance issues. Also on a less related note, is a clutch derailleur necessary to run 1x10 or does it just make it less prone to chain drop?

Thanks for any feedback!

The clutch is not necessary but further reduces the risk of chain drop, and it almost totally silences the chain.

I am running a wolftooth direct mount with a x9 clutch derailleur. The wolf tooth does a great job keeping the chain on. I have only dropped my chain twice in the past 5 months. Both of those times I was going down really nasty, rutted out, descents. The last 2 races it performed flawlessly. Ditching the front derailleur dropped weight and has not limited my riding.

I would recommend the clutch type derailleur considering I still get some chain slap noise even with a cluth. I can't imagine the noise with a regular derailleur.

For $18 less I would get the Absolute Black and I think it looks the best too.

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For certain parts stiffer is more important than lighter.