Oh my, did I ever screw that post up. Never used the quote feature before.

Pianist:
I'm sorry to dispute you, but that is a false statement. Baby grand actions are the same as grand actions although the do vary in design by the maker and the year it was built. Some grand actions are amazing and some are just down right crappy to the point of a high quality upright would probably be a better choice.
Upright pianos do not have repetition levers, grands and baby grands do. A Steinway M (5'7") or an S (5'1") has the same action as an O or a B. The difference is case, frame and string length. An S or an M will not sound anything like their larger pianos.
A C1 or C2 Yamaha will not have the sound of a C5-7 but can be real pleasures to play.
Porcupine:
I still have the International Piano magazine March 2009 issue that has an article on affordable baby grands. Its a UK publication so the prices are in pounds,
The least expensive was an S. Ritter @ 3,999. A lot more piano than expected and great for a starter to middle stages but the action still felt every bit the budget piano and of course, the sound starts to deteriorate toward the bass. Great for the price.
Halle & Voight from the Pearl River factory. 4,500. Again they mention a big surprise in overall quality for the price and again, the sound was a bit weak in the bass. More piano for the money and they seemed more impressed than they though.
Reid Sohn garnered a favorable review @ 9,999. Comes with a playback system, tone was impressive.
Hamlyn Klein @ under 10 grand, could not review because the piano was not regulated yet.
OK. Now to the Yamaha GB/GC lines. Hate to burst your bubble, but here goes:
The GB1 @ 9,699 was a big disappointment. At that price it felt every bit the budget piano, which was unexpected. The piano desk does not move, the style was minimal, the keys felt tacky under fingers and the sound failed to compensate, sounding glassy at the top and weak in the bass.
The GC1 fared slightly better, but at over 14,000, it was stretching the 12,000 budget that related to the article. Sounded much better and the action performed much better.
Now the big winners......the Kawai GM10 @ 8,499 and the GE30 @ 10,999.
No great loss in the bass. Sounded like a larger piano with depth. The keys felt good to play. The GE30 was described as a living instrument in which there was no higher praise for any in the lot.
Of course, I posted this to give you an idea of what these folks thought and it really only should matter what you think. These pretty much fall into your budget, so get out there and play them all.
Personally, i would also play as many of the higher quality preowned piano as I could too. You could probably do better in overall quality for your money. You could probably find a well cared for German instrument that's 15 or 20 years old for that price, nice and stable and played in.
Happy shopping. Keep us posted. Hope this helps.