Hi Sue!
I have several DA's, all bought at local garden centers. You can check if there are any nurseries in your area that sell them (via DA's usa website). All of these were in 5 gal. pots, which really boosts your garden's maturity :) Also, this summer, I ordered a band size from Heirloom Roses. Which is nice, because they ship all year round.
In my garden, I have (from longest to newest):

-Windermere (petals shatter easily, but has a lovely myrrh/citrus smell)
-Abraham Darby (wonderful scent, very big/full blooms, good disease resistance in my zone 6)
-The Generous Gardner (really pretty, big blooms and nice fragrance)
-James Galway (smaller med. sized blooms, incredibly tight blooms that stay on for weeks)
-Charlotte (suffering from blackspot this year, slow to rebloom in this really wet weather)
-Munstead Wood (gorgeous dark red and old fashioned, quartered bloom, with phenomenal old rose fragrance)
-Crown Princess Margareta (just bought, no blooms yet, but it has taken off in its little band pot).

Just a note, from my experience DA roses tend to be rather bigger in US gardens (although, maybe MI will keep it a bit more restrained). So, just something to keep in mind when planning out their spaces in your garden :)

I am hoping Pickering roses in Canada will be allowed to send bare root david austins to US again next spring
Very inexpensive and I have over 50 that I have bought from hem over the years..Like about $15. Us each.
Us would not let them ship this past spring for some reason..