I am ramping up to build a winter bike with an internal gear hub and either a drum brake or coaster. I would like at least a 7 speed hub. I have a red band Shimano Nexus 8 which has been good and I have heard great things about the Nexus 7 also. I have never heard bad news of the Sram Spectro hubs either. Are all these hubs good and reliable or are there one I should stay away from? Is there pros/ cons on drum/ coaster brakes?