New or restored - dash circuit boards and gauges

I'm working on my 1970 Dart with a standard gauge cluster. I talked to folks at Instrument Specialties about testing/restoring my gauges (of unknown status) because I really don't want to take this cluster in and out multiple times (including the freshly restored bezel). I said something to IS about new circuit boards and they really bad mouthed the repop circuit boards that are available from several sources (seem to all be the same manufacturer). I also found a source for new Temp and Fuel Gauges (Herb's). I use an ammeter mounted under dash for safety so the one in the dash is a dummy anyway. None of these repops are cheap, but they are not outrageous.

Has anybody used these repop circuit boards or gauges and how are they working??? Thanks for your help!