The Boondocker Tod was talking about and the one you linked Boondocker 4 Stage Power Center 60 Amp (BD 1260PC)
has all the right features you need. For the 12 VDC side (for the battery,) it has a 3 stage smart charger with a desulfate mode and 15 DC circuits. On the 120 volt AC, it has enough room for double breakers to have a 30 amp main and 5 branch circuit breakers.
I have never used one, but by the spec's it is a good match. Warranty is 3 years.
Another good one is the Progressive Dynamics. This one, sold on the same site you listed. The PD 4060 PD4060 60 Amp Inteli-Power Mighty Mini Power Center
For the 12 VDC side (for the battery,) it has a 3 stage smart charger and with a desulfate mode and 12 DC circuits.
On the 120 AC side it has enough room for double breakers to have a 30 amp main and 5 branch circuit breakers.
I have used the Progressive Dynamics converter and I am very pleased with it. I have not used their power center however they have high quality so it should be good. It is made in the USA and has a 2 year warranty.
Since Tod has used the Boondocker and pleased with it, you have 2 good choices between the brands. The number of AC and DC circuits should cover your needs but check in case someone added more then the factory had.
A few tips regardless of which brand.
1. Before buying, read over the mounting space clearance requirements for proper cooling. Odds are high both are a different size then the older Centurion you are replacing. The manuals talk about how much free space is to be around the unit for good airflow.
2. When hooking up the unit, takes special note to the wire colors. Especially the white wire. Sunline used white braided wires for 12 VDC negative and they also used Romex style cable with a solid wire white for 120 VAC neutral. Make sure those 2 sets of white wires do not get mixed up with each other. Each has its own buss bar (terminal strip) and they are not to be tied together and have to be seperate. While white 12 VDC is common to earth ground by way of the camper frame ground, the 120 VAC white AC neutral wire is isolated from the frame ground and earth ground for proper operation.
I have bought from Best Converter.com before (the place you linked) and had a positive outcome. They are an authorized distributor of their products and all the warranties will work. It seems some other sellers have figured out a why to cheat the system. Read more here Progressive Dynamics Inteli-Power Converters
Hope this helps and good luck
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
Google Custom Search For Sunline Owners Club