I'm considering making some modifications to my bike but want some input about how fast technology progresses in relation to forks and suspension. If I pay $3-400 for a new fork, how long will it be until that is no longer considered "good"? Do new advances make forks of a few hundred dollars outdated quickly thus leaving them for people who are competitive or serious about their bikes? Or will components I upgrade now not be greatly surpassed for the next 5 years or so? Simply put, how much have things changed in suspension over the last 5 years? Thanks for any feedback.