If you bought eight Austin roses without knowing the name of the hybridizer, it's clear that his roses are a good match for your aesthetic preferences. I think you definitely should add some more Austins to your garden.
I have lots of mystery roses left over from the mid-1980s, when I first started collecting roses and had very little money for gardening. Spring Hill used to sell a set of hybrid teas for some ludicrously low price I can't remember. It was a set of five roses -- a white one, a yellow one, a red one, a pink one, and a bicolor one. No names on them, and I'm sure they were the leftovers, but I bought three sets and most of the roses are still alive.
