For canti go for cane creek (service mode is handy).
It'll be caliper brakes...what's the service mode?
the little button to slacken lever? EDIT - apparently they both have QR feature
Edit: both carry this feature
A built-in push button quick release system provides cable slack for quick wheel removal or to gain additional tire clearance on-the-fly when the conditions get muddy.
@Philip_J_Fry started
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For canti go for cane creek (service mode is handy).