I have a built in generator on my 5'er, but when I was working on decisions for full timing a few years ago I gave a lot of thought on whether a 5'er of a TT. During this process I thought about generators a lot. I had pretty much decided on a 3500-4000 watt Honda or Yamaha because of their sound level operation and overall quality. At this point I would only consider two smaller ones and a parallel cable. You never know when you are going to develop back problems or other issues that will prevent you from handling a larger single generator. Just something else to think about.
I am leaving Road Atlanta this morning after boondocking here for the past 5 days. I ran my generator for 35 hours on approx 15 gallons of gas. I say approx because the last 5 gallons is running right now. Coffee time you know.
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof