maybe soft.com.sg will have more resources on guitars and other instruments.
maestro guitars had been receiving rather good reviews for it's price point.
í own a made in korea takamine, going to get an action setup soon (the made in koreas one are within your budget, those made in japan ones will cost at least $1000),
budget solid tops include the cort earth, or custom acoustics
actually there's too many of them.
of course like earphones, you'll need to try them to know which one is for you.
oh my there's too many shops around:
luthermusic at excelsior for yamaha, cort and takamine (http://www.luthermusic.com/index.php?module=WB_GroupPageGen&Gid=2010000
davis guitar at peninsula (http://davisguitar.com/
) for takamine and fina
guitar77 at peninsula (http://www.guitar77.com/brands.html
) for lee guitar and maton
maestro/zen at excelsior, peninsula and esplanade (http://www.maestroguitars.com/
) for maestro
sweelee at bras basah (http://sweelee.sg/
) for ibanez acoustics, epiphone, cort and a lot more
ranking at bras basah opp sweelee for seagull, jack & danny, tgm and a lot more within your budget
sinamex at parklane mall (http://www.sinamex.com/store/store.html
) for simon & patrick and taylor
citymusic at peace centre (http://citymusic.com.sg/index.html
) for custom acoustic and ovation (features carbon fibre back)
yamaha at tampines mall, thomson plaza and plaza singapura for yamaha
sorry for not recommending any specific brand. there's just too many to choose from.