Hi Leslie. Thanks for joining.
Sorry, I can't help with those brands. Resonators are odd ... I once had a Dobro D-33 as a sponsorship deal. It was the dullest sounding resonator I'd ever heard. Since then, I acquired a hand made resonator, the first that Michael Palm (of Brisbane, Australia) had built, and it's as bright and sweet sounding as they come. It's got a wooden body. They really are individual; make sure you play it before you buy.
Use heavy strings and a heavy
slide if you want maximum sustain and tone. I use 16-18-24-34-44-54! You may not want to go that heavy, but you won't need to be bending anything with a slide on your pinky, so give it whirl with something other than 'slinky' gauge strings. They make you sound like a mosquito.