I think because I discovered the band in late 2012 before they even started playing live (in the Longdon era), the studio versions have always been my go-to for every song, though I will agree that some of the songs they've made are just better in their live format, particularly "A Mead Hall In Winter", which includes the brass ensemble (since Grimspound didn't have any brass on it at all).
But if I'm in the mood for BBT, I typically go for the studio albums, though when I'm really into it, I'll put on their live (and live-in-the-studio) performances as well to vary things up a bit.
As for EEFP having callbacks and repeated themes across the album, hearing the Full Power version after the first two individual albums came out was like a revelation for me. When all of the songs finally came together and were sorted into Full Power, everything just sort of clicked for me and things started to fall into place. It's a truly brilliant album and the sequencing of the songs from EEP1, EEP2, and MSN feels masterful and well thought out. I know some fans prefer the individual albums more, but it just feels more cohesive as a whole with EEFP, and this is coming from a fan who heard the individual albums first (and EEP2 was their first new release after I got into them). I'm also a sucker for double albums, especially ones that feel conceptual, and while EEFP isn't a narrative concept album, it's definitely thematic, and of course, musically conceptual with its shared motifs and themes across several pieces.
I am kind of wondering if the band would ever consider doing an album compilation of Common Ground and Welcome To The Planet since there are some obvious thematic connections, both lyrically and musically. It probably won't happen, but it's a fun thought!
-Marc.