Thoughts: Modern Warfare 2 Multiplayer

Soon after prestiging in Modern Warfare 2, I realized I had already played about as much Modern Warfare 2 as I had Call of Duty 4 (my previous favorite online shooter).  In COD4, I prestiged once and reached level 37 (if I remember correctly), but the max level attainable in COD4 was 55, so the progression was quicker.  Here are my thoughts on MW2 after 68 hours of play-time:
 

• More fun with more friends:   I'm having more fun with Modern Warfare 2 than I did with COD4, and I think it's mainly due to more of my friends owning the game.  I'm getting a chance to play this more with them than I ever got to play COD4 with my friends.
• Damn akimbo 1887s:  People running around with akimbo 1887s on small, enclosed maps really drive me crazy.  Countless times I've turned a corner or entered through a doorway only to be blown away by someone with them.  On open maps, it's pretty easy to take them down from a distance, but even then, sometimes they're too accurate.
• Customizable killstreak rewards:  Probably my favorite addition to Modern Warfare 2 are the addition of more killstreaks and the ability to customize them.  I wish I could assign a different set of killstreaks to the different custom classes, but it's not a big deal. 
  
• Stopping power:  No, I'm not talking about the perk here.  I'm talking about when someone is making a run at me with a knife and they have the Commando perk on.  I feel like hip-firing bullets into them as they're lunging at me should cancel their knife attack and stop them dead in their tracks.
• COD4 had better maps:  I loved most of the maps from COD4, including Crash, Vacant, Pipeline, Downpour, Crossfire, Ambush, and even the downloadable ones including Creek , Broadcast and Chinatown (a remake of Carentan from COD2).  Modern Warfare 2 has it's share of good maps, but not as many as COD4.  In Modern Warfare 2, I really enjoy Afgan, Sub Base, Highrise, Favela, Invasion, and Wasteland (a remake of Brecourt from COD1).