Steve, Larissa is not a climber. It's a very short rose, more of a ground cover than a climber. Jasmina, however, is a veritable giant and always looks good. I don't have Laguna, so I can't tell you anything about its qualities, but it is a climber.
I bought Lorise from Pickering a year or two ago and I just love it. HMF says it grows to 4 feet, but mine's about a foot taller than that. The coloring is unique: silvery-white blooms with a pale pink edge that gradually turns coral-orange.
Yes, Signature does produce perfect blooms.
Kordes' Brillant is an eye-popping sight in the landscape -- the brightest orange-red rose I've ever grown. When you're ready to post photos of it in the database, please note that Palatine is misspelling (or actually translating) the name. It's Kordes' Brillant (German for Brilliant), with an apostrophe after Kordes.