Ironically, Crash is the best map in the map pack. Salvage isn't too bad and I'm sure I'll get used to Storm. Bailout isn't like Bloc, which I was hoping it would be. Overgrown is still full of snipers and I always had a love-hate relationship with it in COD4.
I wish they had remade made all the COD4 maps for the price. Has anyone noticed the changes they've made to the maps? Because they don't look different until you see "details" in some of the buildings. Details that you don't really give a shit about because the maps in COD4 were almost perfect anyway. If you have time to admire the baskets piled up in the corridor of the sniping spot on Crash, then you're not playing the game right.
And for those who don't yet have the game, I think you'd be best off waiting for the inevitable "GOTY Edition" with the map packs included (probably due a couple of months after the maps go live on PSN and PC), which you know stores are going to sell for less than the price of the original game.