Best transformers for N?

[RobertInOntario]

When I switched to N scale just over a couple years ago, I simply continued to use the transformers which I had used when I was into HO. These are a Railpower 1300 and a similar one made by Athearn (I could post a pic if that helps).

These two transformers generally work well, although I think the Railpower one might be "dying." Recently, I've heard that some other transformers might work better with N. Is this the case and, if so, which ones would be best? FYI, I'm mainly running British N, but that shouldn't make any difference. I'm always trying to maximize smooth low-running operation. And I think I read that some transformers, specially geared for N, might help with this.

Thanks for any feedback.

Rob