Hi there all Sigma fans/owners !
Just found this VERY informative discussion about Sigma Guitars, thank you all!
There's a comment from "Fossil" (16 may 2012) about if anyone have a new Sigma.....well, I have recently bought a new DRC-28E, this one:

http://www.sigma-guitars.com/index.php?id=257

I paid 440 euros from a Ebay dealer (about 550 USD).
New, only unpacked and used for his photos - and it was "as new" when I got it!
Sigma Guitars hompage says "listprice" 670USD.

I was searching for a good "mid-price" acoustic, and ended up choosing between the DRC-28E, a Takamine EG340SC and a Tanglewood TW115-ST-CE, but finally decided for the Sigma, mostly because it looked best, in my opinion. Classic without a lot of sparkling inlays and bindings.

I must say that it's great value for the money (without beeing an acoustic expert). Sounds great, specially after changing the original Martin 0.10-strings to Elixir 0.11's. Think that 0.12's will improve the sound even more (but beeing a mostly electric guitar player using 0.09's, my fingertips have to take it "step-by-step")
The changing of strings was something someone at harmony-central recommended:

http://acapella.harmony-central.com/showthread.php?2884779-Sigma-DRC-28E

Haven't been able to compare to a real Martin, but played it A/B with my friends Gibson (don't remember which model, but it's quite similar, a dreadnought cutaway) and actually he was a bit...hmmm...."confused" that my Sigma sounded so good compared to his Gibson which he bought for about 3-4 times as much. Of course there was a difference in sound but no one of us could say which one sounded "better".
Also did some A/B-ing with my other acoustics a DEAN "exotic zebrawood" and a LAG T200D, both dreadnoughts, no cutaway, no electronics. Selling my DEAN now.....no place for more guitars !!!

So - my "5 cents" must be "great value for the money".
Looking for and older/used/vintage SIGMA now.........to eventually replace the LAG T200D

Best regards

Olof from Sweden