A four cylinder Tacoma should be able to easily tow 2,200 pounds. You might prefer more power from a V6 when towing though. Make sure you test drive both. If you have the money for the V6 I would go with it. I have never liked towing with a four-banger.
I am actually considering a Tacoma for my next purchase because I mainly ride motorcycles and need a tow vehicle to drop them off for maintenance. However, my trailer and motorcycle come to about 1,200 lbs., so I think it might be easier for me to get away with a four cylinder Tacoma.