THE BETTER THE BIKE IS SETUP, THE EASIER IT IS TO RIDE - REGARDLESS OF HOW FAST OR SLOW YOU GO.
Look at your wallet and ask yourself this question - "how easy do I want my bike to ride?" Now, compare that level of want with what is in your wallet and buy the best you can afford.
Here's the bottom line on suspension. The goal of the suspension and bike setup is to keep both tires on the ground at all times. The better the forks and shock, the more this goal will be reached.
EVERYONE has an opinion about it, and the more opinions you get over the Internet the more confusing things can be.
The other thing to consider is the relationship side of this equation. No matter how good the suspension components, they need to be setup right. Buying a used set forks off the WERA BBS and saving a couple hundred bucks is not going to help you setup your bike. Being able to pick up the phone and call someone who can and will help you IS PRICELESS!!
Honestly, just call Ohlins. They are a NESBA sponsor. Talk to them and tell them what your goals are. Tell them your current pace, your weight, bike specifics, etc. Ask them for their recommendations. If they can help AMA guys win championships, they can help you and I as well. Go with what they say. I've been working closely with them for several years and they have never steered me wrong. I have been able to progress nicely with their help.
Ohlins USA
828-692-4525 ext. 309
ask for Mike (Thermosman) Fitzgerald