I guess Star Roses focuses on roses bred by Meilland. Meilland's landscape roses - such as Bonica I think of as being really tough and cold-hardy. But somehow I think of most of the hybrid tea Meilland roses as being not very cold hardy, zone 6b at best. I'm putting Gina Lolobrigida and Papa Meilland to the test and will report back as soon as I know something useful.
