Coil Back end is a must, its a different bike with the coil out back, I had the DHX-5 from new and had it Push’d awesome. the Lyric coil matched nicely to the DHX, superb ride. Only sold the bike because it was too big , didn’t realise until I rode a medium, made a huge difference to me.
You’re not the first person to say that, about time I made some changes then – rather than changing my frame, which was the other option! Out of interest how tall are you? I have a large?