The best class is what you are used to and good with. Select the perks which will actually help you, not just get you high score when completed challenges.
My personal option of the best class is getting the galil or famas, with silencer and larger mag ammo. Ninja, ghost and warload perks.
No, I don't think so. Kills from Killstreaks, such as the Stealth Bomber, do not seem to count.
harrier ac130 and nuke
This is my personal favorite: AK-47 Extended Mags Python Speed Reloader Semtex Concussion Grenades Claymore Scavenger Pro Sleight Of Hand Pro Marathon Pro Killstreaks: 8-Blackbird 9-Chopper Gunner 11-Attack Dogs
The best killstreak is the Tactical Nuke but use killstreaks that you can get frequently.
It all depends on the map. If you are playing on a map with a lot of open area, then a chopper gunner. If the map has a lot of buildings, then you'll want to choose dogs. Try running both killstreaks.
Primary: ACR 6.8 | Silencer+Extended mags Secondary: MP9 | Silencer Grenades and Equipment: Semtex and Flashbang Perks: (1)Scavenger or Sleight of Hand - (2)Hardline - (3) Stalker Killstreaks: Predator missile - AH-6 Overwatch - Pavelow (This set-up allows you to keep killing enemies with your gun, while your killstreaks are in the air, getting kills as well.) or, Reaper - AC-130 - Osprey Gunnar (Just hide your body, and the Reaper should get you the the AC-130, and that should get you to the Osprey Gunnar) Deathstreaks: You don't need them!
The Class I now use gets me 20+ kills each demolition match I do so here it is P90(holo sight+FMJ) Ranger Akimbo Blng Pro Hardline Pro Commando Pro Killstreaks: Care Package Predator Pave Low Please mail back if you think it can be improved :)
In some ways it is, but some ways it isn't. Better things in mw2: Tactical knife, nuke, great maps, amazing graphics. Better things in black ops: Rarely run into hackers 1/200 matches. Less campers, wont get quickscoped. Bad things about black ops: Hard to quickscope, no nuke or tactical knife, cartoonish graphics, hard to camp kills from killstreaks dont count for later killstreaks! Im sticking with MW2. (even though i have black ops)
september because when you start a new class or school you are getting older
Primary: AUG | Duel Mags Secondary: M1911 | Extended Mags Grenades and Equipment: Frag - Concussion - Claymore Perks: (1)Scavenger or Flak Jacket or Hardline - (2)Sleight of Hand - (3)Tactical Mask Killstreaks: Blackbird - Chopper Gunner - Attack Dogs Can't get that high? Try... Spy plane - Napalm Strike - Attack Helicopter
The best class I have is a chicom with the EOtech sight and a ballista with variable zoom 1 shock charge and a betty with ghost and toughness with engineer.
Dual RPG with 2 throwing knives. You will win! :)