Hello. I'm new. I've been cycling into work since Christmas, when a new baby meant that the wife pinched the car. I'm getting into it now and would like to start learning about doing my bike up and changing a few bits on it. I want to start with the brakes. The bike has v brakes, which are just plain and have no name on, so I'm guessing they're cheap. Would I get much advantage with upgrading them? A friend has suggested Avid Single Digit 5s, and I've found these online at Chain Reaction Cycles for £15. Are these any good? Are they easy to fit, and would the change be worth it? My friend said that Avid are good because they are the same company as Sram. Is he right, and is this company good? Thanks for any responses I might get.