You're going to have to decide what type of riding you're going to do because suspension has been tailored to different riding, including XC (race), trail riding, Freeriding, urban/jump and downhill. Some forks and shocks are pre-tuned for their design and some can be tuned across a whole range of disciplines.
At 5" of travel, I assume you're in the trail riding realm. Those forks listed above are all good options in that area. There's a good mix of coil and air options. Air is pretty good these days. They've figured out how to make air supple over small bumps and ramp up nicely at the end. But they tend to have more adjustments, so if you don't want to muddle thru this kind of adjustability, stick with coil. The weight penalty with coil forks is generally about .5 lbs.
At 5" of travel in the rear of the bike, you'll almost undoubtedly have some sort of air shock be it Fox, Manitou or RS. They make coil over shocks that fit 5" travel bikes (Vanilla, Swinger 3-way, Romic), but the weight penalty is greater, about 1 lb, and the performance of basic coil over shocks is not better than air shocks. Not until you get into coil shocks with the added adjustment (that is, a reservoir) will you increase your performance capabilities. The problem then becomes fit, as many 5" travel designs are not made for these types of shocks (DHX, Swinger 4-way, Cane Creek Double Barrel, etc.). The idea, I think, is that 5" bikes can and should be relatively light and this type of shock generally is not (you can get Ti coils which reduce weight). The added reservoir then creates the fit issues. Some bikes can accept these shocks though. The Titus Moto Lite, Turner 5 Spot and Intense Spider EVP (not sure on this one) come to mind.
I suggest you find the right platform first, then worry about what shocks and forks you'll need. You'll find lots of good info on this board and most of the suspension on bikes over $1500 is generally decent. There are always exceptions.
