I grew a Bush Champion this year, and didn't like it nearly as well as the Marketmore 76 I've grown for the past several years. We picked them at 5-6" and still thought the texture was lacking (not as crisp). I thought the skin was tough, and not as flavorful.
I also grow lemon cucumbers every year because we love the mild flavor and small size.
We normally aren't bothered so much by heat with these varieties, but the wet weather did them in early this year.
Sorry I can't help with info on any of the other varieties you asked about
@donshirer
