True that you didn't tell us much info...but on average, Fox Shoks are always a pretty good bet for all around use. Not too expensive and easy to rebuild. Personally, I stick to hydraulics, but I race sleds as opposed to hit rough trails with them.
One more big thing you have to think about, not only the ride is how much $$$$$$ you are willing to spend. You can get gas charged and have them valved to your riding style or just stickwith plain off the shelf and try to adjust usinf sping loads.
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