just my opinion, but i think removing the TB from the intake is a big waste of time. just spray the throttle plate with carb cleaner or brake cleaner or electronic cleaner. remove the IAC and spray side the well. poke about a 14-16 gauge wire through the port while looking down the TB. you'll see the wire.

any brand of iac is fine. the $40-50 one from the autoparts store is as good as any.