http://www.amazon.com/Schumacher-SC-10030A-SpeedCharge-Automatic-Maintainer/dp/B001MYWBF0
This one from Amazon looks attractive and it said it is good for AGM's! Now the only question is if my Honda 2k will power it.
However, Randy from BestConverters emailed me back and said that the Boondocker 75 amp would work good for the AGM's and be powered with my genny.
I'm thinking that since I don't camp all that often maybe 5-10 times a year that the portable schumacher might be a better choice and more universal for other needs. While camping I will use it for a bulk charge and when I get home set it to trickle and get them back to 100%.