Also anything with autocannon or HMG can provide a bit of air defense. Vulcans, Gepards, Marder 1, BMP2, VAB, Fuchs, AMX30 or Tunguskas with missiles turned off are good for that.
Also MANPADs (Igla, Stinger) in apcs, have them move with your tanks and unload when necessary, although i dont use that much anymore because Chaparrals/Buks behind your force and some Roland 2/TunguskaM or vetted OSAs is all the air defense you should usualy need. When you get overwhelmed by Helicopters, just retreat your expensive units and let the HMGs and autocannons deal with them while your missile AA snipes them.
this may take up a lot of deck spaces but i've yet to see it beat by a help spam
if u have 2 player in a 6000pt match i use 3 aa weapons
chaps are for sniping mi-9's
rolands for the dang havocs that as u say are microed
vulcans for the help spam as they tear anything up once its in range
for covering cv's i generally put 2 vulcans with them and sometimes even a chaparral depending on my money