I've admired the Trainwreck/Alessandro/Bruno hardwood cabinets and heads I've seen and was considering building some for my gear. I've read what seems like volumes about pine, MDF, particleboard and Baltic birch plywood and how each contributes (or doesn't) to the sound of the amp, but I'd like to hear from those who have or have played through hardwood cabinets and get their impressions. I've got plenty of air-dried black walnut, birdseye maple and lots of exotics (cocobolo, wenge, ziricote, padauk, pau ferro etc.) to choose from, but am leaning toward the walnut as the boards are plenty wide (less gluing) and I love the look of walnut (it goes back to my Grandfather's shotgun collection). Thanks!