Acoustic Guitar Under Saddle Pickup

Hi, the guitar is better?

Hi I'm stuck between, what the two guitars to buy: Yamaha APX-5 (electro) Tanglewood tw170as O (a Acoustic version, but the person who has a B-Band A2.2 Pickup in a saddle transducer set and an echo chamber of the converter) I really do not know what that means, but if They tell me I'd appreciate it. But basically it has become an electro-acoustic. Who knows what the best guitar left aside the price of them thanks in Advance

Best Sound Yamaha APX-5A to

Summer NAMM ’09 – D-Tar Multi-Source Pickup-Mic System