if you want a mellow sound, then go for guitar with solid cedar top and not spruce. From seagull's website, i think they use lots of cedar as the soundboard. Seagull is a good choice for quality at affordable price.
Just drop by Excelsior today... i didn't know there are so many guitar shops there... if you want a good acoustics at affortable prices why not try those maestro guitars... i am quite impressed by their quality and sound.
I think they also provide setup(adjusting your action) for your guitar... price i dunno... why not you give them a buzz? The namecard says they are open 12 to 7pm weekends and sat... number to call 63378687