Mike,
I have a 412 or GC4. It is my favorite guitar. It is easier to fret than a "full scale" guitar. The neck has 14 frets "clear" as any 14 fret guitar.
It's the bridge placement and body size that changes.
It is not a loud guitar. I strum mine mostly. It sounds great but I play softly. The GA will be louder, if you play for others or "Gig". I am a small person so a smaller guitar is nice.
It's a comfortable guitar to play and sounds great, not quite a year old. I prefer phospher bronze strings.
Play both if you can, it's a personal decision.
Good luck, Rick
The Ga people will chime in, they are great guitars too.