O scale and DCC

I have been lurking and surfing about DCC since I retired a few months
ago, as I get back into the layout business. So I am not going to ask
which is the "best" DCC system, although there is a confusingly huge
number available now.
Just a question about power.
What do you O scalers use/prefer? I have run some tests on my locos and
the newer can motors don't use a lot more run current than an HO rig,
but the stall current is MUCH more. It would certainly take out a 1 amp
circuit that didn't have good protection.
I know my old open frame motors will have to be replaced, but I would do
that anyway even if I was going back to a DC throttle. But I need a
system that is not fragile as pertains to larger current draw.
Thanks all
Bill Staples
(Konan)