Don't know if this helps or not, but I run my entire shack off of one Samlex SEC-1223, that's an IC-2200H, the Uniden VHF Marine, and the TS-130S all at the same time. Since I only transmit on one radio at a time I've never had reason to believe that I'm over burdening this power supply.
I know several ham's that insist on using super high amprage power supplies, and unless you're running a 200 watt transceiver, or a solid state amp that requires 12 vdc, it just seems like over kill.....