What is your main gun for ct and tc?

CT:
-No money: P250(usp is better when you are more like a camper) and Scout (perfect for helping the team kill the enemy when you guys low on budget)
-Money: Deagle/FiveSeven (depends on your play) FS for rushing Dgl for waiting and AWP/M416 (long or midrange depends on you)

T:
-No money: P250 (can still 1hit HS from close quarters even if the enemy has helmet) and P90 (I know it sounds noob, but it's good for rushing objectives with smokes or flashes, rushing spots with 2/3 enemies can get really handy, a moneymaker)
-Money: Deagle (you need to do damage!) and Ak47 (ez 1tap) or SG552 (don't underestimate this weapons, it's really devastating if you get the hand of it)

Be sure to buy smokes and flashes, those are very important and it doesn't matter much your choice