I spent some quality time last night with my CU24/30th model, and my HXDA 30.
I gotta say...this combination is a beautiful sound, from delicate and clean, to overdriven and nasty, all with a turn of the guitar's volume control. Heck, I even liked it with the 1x12 last night - maybe the darn V-30 in the cab is finally breaking in a little more.
With the McCarty Singlecut, I like the HXDA plugged into a 2x12, there's simply more "room" for the guitar to breathe on the low end and the SC needs it. But the CU24 sits really nicely in either cab.
I gravitate more to the DG30 for the 20th Anniversary of PS guitar...(the "20thAOPS" and I really shoulda given it a name, dang it!). It sounds great with the HXDA, of course, but the DG brings out the differences between the pickup positions just that little bit more at higher volumes. Same with the McCarty/maple neck.
As to the Lone Star, I seem to like it best with the guitars I like the DG30 with, for a different flavor, however, the DG30 is still my preference between the two for most things. Nonetheless, I'm glad to have the Mesa, it compliments the PRS amps very well, especially when I want something that sounds "Leo-ish."
I think I'm super-lucky to have the rig and the guitars I have. Couldn't be happier, honestly.