I would avoid Seaton these days. Been hearing a lot of rumbling that he's not meeting deliveries or returning calls/emails. Would like to be wrong as he seemed very well respected several years ago.
I like the Harbottle/Funk angle, myself. I think what those two guys are doing is disruptive to the industry in a good way. Apparently Nathan has even commented that Cody's approach to modeling Subs in their LDLC System is too powerful a tool, too good.
That, and I have yet to see or hear a person with a less--than-stellar comment.
Of course, if you want a beautiful Cheery Cabinet, Funk would be the way to go... but I think there is a lot of value in Harbottle Subs.
In the end, I think JTR is still very good, but I don't think they will compare as well as we want them too. Pass on the orbit shifters.
Designed for pro support, they will not have the extension you want for HT. They'll be loud as fcuk up above 40Hz, though.