The only stimulus you will feel is a sense of loss in your wallet
Storm: Some kind of a stupid complex with a warehouse in the middle. It could have potential for a great CQB system, but is too small and with not enough cover to be good. The outside is extremely open, and is easy to get gunned down by a camper on the corner. The mannequin shop is a great place to camp in and rain death from above. Same with the building straight across from it. The stupid crates provide some cover, but even better places to hide in.
Bottom line: Campers pitch your tents, roast some marshmallows, and call in killstreaks.
Salvage: A junk yard with some kind of a Berlin wall in the middle. Two open areas on either side of the wall, for each team to camp in. Anyone attempting to go through the wall gets shot. Lots of corners for campers, and a dog house death trap. Seems half-assed and unfinished.
Bottom line: Avoid like the plague
Bailout: Looks like a revamped Bloc at first, but turns out to be a rather good residential area fighting ground, if rather linear and unimaginative. The apartments are limited to ground and first floor levels, but still make for fun HQ and S&D gametypes.
Bottom Line: A solid map, but rather like every other MW 2 map.
Crash: An instant classic from CoD 4, but somehow feels diminished. Nothing has been changed, but you can never revisit a classic. Downed chopper in the middle, sniper building, two other smaller buildings, side alley, great map
Bottom Line: Worked better in CoD 4, but still is amazing
Overgrown: A sniper's haven. Snipe from the roof of Grandma's house, snipe from the crack house (Mr. Belvideer's House), snipe on the roof of the wooden bridge, snipe in the farmer's field. It's great but leaves you feeling like you've been there, done that.
Bottom Line: A great map, but it is already been done in a better game
The map pack's steep price is unworthy of your MS points, and you shouldn't buy it. Overpriced, overrated, crappy maps and 2 remakes. Map packs from CoD: WaW were much better priced, and included great Nazi zombie's maps. Borderlands DLC are also great. MW2's... not so much. This map pack sucks.