Yes, I went with the 444-4221B. These were the black, 13" Heavy Duty springs.
I went with these because:
I could not find the STD sprung units in stock anywhere and in order to get in on the good deal, I decided that if I didn't like them it would be less than $100 to get the STD springs from Progressive and switch them out myself. If I could have found the STD spring shocks in stock anywhere, I probably would have gone that route based on Steve's suggestions, especially since we're about the same size and riding style.
As for the 13" over the 12.5". From what I've read/could figure out, my rationale there was might get a little more seat height and it may make the bike a little more responsive in the cornering dept. I already had the larger rear and different front tire sizes on it and liked the improvement and figured this would add to it, but this combination would still keep me inside of the "not twitchy" zone.
Out of curiosity, why go straight to Progressive, pay full MSRP and wait a month and a half instead of using another vendor. You can get those same shocks from a vendor, still get in on the free fork spring deal, pay a lot less AND get them in a week or two.