I have a 2006 G-400 Custom from Saein (I) Korea.
It is a beautiful guitar.
Nonetheles, mine came with Pros' and Cons
Cons:
crappy bridge & tuners
Poorly Cut Nut: Was binding and causing a fuss. I used it but had the slots widened out and graphite added. It is OK to this day.
The old B-2 bridge was very problematic because the saddles would not hold still, constantly vibrating and losing intonation.
A $25 Gotoh replacement cured that.
The Gold Grover tuners that were on this guitar could not have been worse. They would not stay-tight to hold tuning and
were unlike the Grovers that are on my newer Epiphones that have never slipped once and are amazingly tight....
I ordered some Sperzel Locking Tuners and had them installed
Problem cured
Of course another set-up and I added a TP-6 for my own tuning satisfaction
Pros:
Good Neck: The frets and the feel of the neck are outstanding. I have been told by a couple of players that the neck feels as good as an actual '61 Custom
and that the frets needed no work.
Good Pickups: The '57 replica's that came with it were smoking hot and the switching was unique and friendly in it's delivery of combinations.
regardless they were swapped out for Duncan Distortions in the need for an even hotter sound, I added push-pull pots to it as well.
Durable body and paint: This guitar had a run in with a ceiling fan shortly after the Sperzels were put on. What happened?
I lifted it over my head in the playroom while jamming with my son. Whack! I was scared to look...
Needless to say the iron cast body and neck of this guitar rang through unscathed. There was a tiny little dent on the edge of one of the Sperzels that took the knock. The guitar never showed a sign of damage. To this day I wonder how the hell I got away with that. Must be fate. She belongs to me forever.
My best Epiphones are the LP and the SG Vintage, both made at Qingdao China between 2007 and 2009....they only needed set-ups.
(The LP of course got new pickups by my choice)