My drivability issues disappeared when I replaced the old,stock injectors and went with the 60's/Turbo Tweak combo. No more fluctuating idle,stumbling at light throttle,etc.
One thing some people might not like about the *other than stock* injectors is the noise. These 60's click louder. Sort of sound like a quiet diesel at idle from the drivers seat. I like that noise. It means things are working! Some people can't hear it.
But,no need for overkill. Get what you think you'll always be happy with. I got the 60's because I don't want to regret getting lesser. Plus I plan on some mild upgrades.