If you are using the propper bb, the chainline should be correct either way.
That being said, if it is an M3, go with the 150 rear. The narrow crank/bb required for the 135 rear can/will hit the seatstays when you pedal
Other than that, 150 can (depending on hub design) build a stronger (more ballanced spoke tension) wheel, and ffer more clearance for things like the chain and guide. On the other hand, 57mm chainline cranks (required for the 150 rear) are only available currently in heavy duty models...not really any light weight options.
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