[Elecraft] Which PS for K2/100, linear or switcher?

[Darwin, Keith]

My plans to get a K2/100 continue full speed ahead.  Omni V.9 is up on
e-bay and I'm in the process of getting my ducks in a row before I pull
the trigger and commit to a particular rig (new or used is TBD).
 
But what about the PS?  Which one should I get?  Should I go with the
less costly Astron 25 amp switcher or the more traditional Astron 35 amp
linear?
 
Or is there some other power supply I should be looking at?
 
- Keith -