Makes alot of difference what you are starting with.A CF fork may add nothing to a decent frame. A good CF fork may cost more than many frames are worth. Usually the idea behind a CF fork is based on bling and hype,not necessarily a fundamentally good reason. My old stuff is perfectly happy with their good steel forks.I would not even entertain the thought of switching some of them. Everyone has to set their own priorities. Mine don't necessarily run to expensive CF forks on old steel frames, especially low to mid range ones. If you stick with threaded,you won't save alot of weight,and the ride won't necessarily be better either. I've replaced steel forks on mid 90s quality steel bikes with full CF forks,light bars and stems and saved alot of weight. It can also cost alot of money if you don't buy right. I won't blow smoke in you about astounding improvements in ride,because there was none.