I've fixed a fair few Birch guitars over the years - electronically, they were always massively complicated and not very well soldered/built. They always seemed to be under-engineered and really poorly laid out from a repair standpoint.
The woodworking was always a little suspect IMHO - I've worked on an SG-alike that didn't play in tune with itself because the frets were installed in the wrong places. A new fingerboard fixed it but it still had the resonance of marshmallow...
And the neck profiles themselves seem to vary massively from one to the next. I'm sure there are good ones out there, I've just never played one.
As for Shergold - I'm a huge fan and collector of Shergold instruments. Ugly, clunky styling... but unique tonal characteristics. And unique in a good way, IMHO - plus superb necks. Plus they are generally very well made. Unlike most Birch guitars I've played... I love Shergolds.
