Healthy climbing roses recommend.

Hi, a couple of years ago I bought a couple of climbing roses from David Austin (Tess of the d'urbervilles). Unfortunately, these roses have turned out to be prone to disease and I have since checked the David Austin website and they have now been "retired". I am now looking to replace them and wondered if anybody had healthy recommends to climb up my metal rose arbor. I've been looking at the "Mary Delany" climber. Has anyone had any experience with this particular rose? Any help and advice would be much appreciated.