In 30+ years of professional stage experience my conclusion is ALL transducers are crap when compared to a good condensor mic. Ok, my rant's over. :-)

Headways are pricey, but certainly not like Schertler's or any number of a half-dozen odd makers. I've got an old LR Baggs removed from a Seagull and transferred to my Alvarez '87 DY-39. Solid top and laminate sides and back. W/a transducer this guitar sounds as good or better than guitars worth 5 times as much like your Lowden. It's pretty much all in the eq.

As a working musician my recommendation would be to get a JJB dual spot transducer w/an endpin jack and the best eq one can afford. They will all double as a passive DI, too. A Rane 31 band would be ideal as the sound is unbelievably clean. Doesn't sound processed either. They are on the used market for 100.00US. I got a stereo one that I use for guitar/mando for 100.00US. It was a clearance deal from a studio looking to liquidate. I was lucky. It's analog, but very clean, nonetheless.