They aren't my taste but I have shot a friends and I liked it more than I expected to. It shot nicely, it was accurate, it was very light. They have no real stock, they just bolt on the grip, shoulder stock and forearm so they save a few lb over other designs which makes them great to carry in the woods.
The have interchangeable LW barrels so you can easily change caliber or length which is a nice touch. No other brand has as many aftermarket mods and upgrades available as airforce guns and the Marauder. I particularly like the AR grip frames for the airforce guns.
The downside is that they are single shot (which spoils my enjoyment). They are loud and I didn't particularly like the triggers. For the money, also check out the Sumatra carbine for a powerful hunting air gun.