I have three Astrons, RS-7, RM-50 regulated linear supplies, one SS-25 switcher and two Pyramid 3 amp regulated. Plus the bolt-on switcher accessory PS for the Yaesu FT-897. All of 'em work just fine for the jobs they do. The Astron switcher has a fan which I find annoying, none of the linears require them. Unless you have to schelp it around, I see no reason to go with the added complexity of a switcher. My two cents.