The DS2's seem to be lighter, but I haven't had a chance to weigh them.
I'm kinda learning towards the DS2's, but its nice that the bonti's are tubeless.
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I've been running the Race Disc wheels (came stock on my current ride) for the last year. Haven't had any issues and went tubless on them without any problems. Can't say that they are the lightest, but they work.
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