Earl of Essex Has the "best" rebloom, as to frequency, and number of stalks / blooms, but the form isn't the best.....blooms tend to crowd each other, and the stalks are usually twisted. "QD" has better form....both flower and stalk....but some of that is due to the lower bud count. There is a *slight* difference in the color tone, between them, with "Earl" being a bit darker , and "Queen" being a bit "bluer" (here, at least). Lady Essex , which Lucy mentioned) is a fairly reliable Re , here, as well, and her bloom....while being "just another purple plic", has a slightly *cleaner* look to the speckled border, decent form,but quite slow to increase. There are several other "purple plics" that Re for me, too. Purple plics" and "yellow selfs" seem to make up about half of the older Re's