Too bad they aren't flowering as that will tell you right away. Every photo of ID I've seen resembled Bassoues Tea. Comtesse de Leusse is pink, so that will be easy. I don't know about Isabella's prickles as mine turned out to be Ping Dong Yue Ji.

I can show a close up of Comtesse de Leusse [ex-the Hooks, Roseraie du Desert, France.. own root]..

Thanks folks. I was already more inclined to believe what we had was Comtesse de Leusse, but since you who grow it find it thornless, that helps confirm. Now to wait for some flowers (It's not flushing at the moment, and I missed the last flush).