There is no simply the best, to say one brand is better then any other is just pure ignorance. Any top manufacture brand is good. I've never in over 40 years of riding had a seat post fail, and I have a lot of different brands, and I still have quite a few that are over 25 years old and still going strong. Just buy a seat post on looks and setback or time trial use if needed. The saddle rails determine how much forward and rearward distance you can move the saddle, not the seat post. And weight of a seat post is not a big deal unless you buy a cheap Walmart all steel unit; so don't buy a seat post because it's the lightest, also consider if the post is the lightest and most expensive it may not last as long due to using lightweight components that are subject to failure due to stress, so personally I would stay away from those. But any seat post in the middle price range will be more then adequate for anyone even Clydesdales!