I've used Redline SL-1 many times over the years. In reading opinions on the net and the typical car mags it is considered to be very good. The other is Chevron Techron. This is the type of product thats pretty hard to tell if its working or not--kinda 'use it to be on the safe side'. I heard the patent finally expired on Techron (actually one key chemical compound in Techron) and now other fuel formulations, like Shell "V Power" now include it but the concentrations at the pump are so small that they may help prevent a problem from forming, but they sure aren't going to do much for injectors or passages that are already affected.
But the bottle of techron you buy at the parts stores IS strong stuff.

I use either/or in my Fuel Injected cars about once/twice a year.