I have a big linear Astron for all of my radios but would consider any fixed 12 volt supply that has service documentation available. A more economical option might be to find a used Astron or similar and refurbish it yourself.
I have used many different power supplies all but one were linear.
The current supply I am using is an Astron 25 amp linear supply.
They are bullet proof....
As an example of the above statement, a friend WA6MHZ had an Astron 35 amp supply backing up a large Gel Cell.... I was helping Pat one day do odd jobs around his shack and I asked about the 2 meter simplex radio he had set up, why it was not working...
His reply "it quit working sometime last year, I haven't got around to finding out why". Well it was still turned on and so was the power supply running it, that is when I found out about the Gel Cell it was hooked across. It seems sometime several months back the battery shorted. The Astron was running into a dead short for something like nine months...
I removed the battery, cycled the power on the supply and all was good again.
Yah Get an Astron Linear supply.
The switchers have OEM modules in them.
I don't trust them as much.