I'm in the process of deciding on a gravel bike, my front runners being the Parlee Chebacco and Open U.P. Both of the current versions do not have flat mount disc brakes, and because of this post mount vs flat mount, I understand that Parlee frames might be going on sale soon. So the question is, should I buy now, potentially for less money, or wait for new models with flat mount compatibility? Is it much better? I'm new to this disc break game!!