matte for me. i find that glossy photo when put in an album or framed, it become double glossy. light reflected (glare) makes it hard to see. sometimes need to tilt the album or frame a bit in order to see the picture clearly. kinda irritating.
It is just a preference. But I do agree that matt handles easier for framing purposes. For me 100% of the time I print matt as I do not really see the need for details (glossy seems to give better details), not when you want to blow it up to 12R
Glossy shows more details, hence sharpness or lack-of-it shows more. also for digital, artificial sharpening shows up more on gloss, looks 'digital'. the colours are vibrant on gloss. Glossy prints VERY hard to handle, can't pass photos around or put onto glass frames (as said above).
Matt prints gives a 'classical' film grain feel to digital photos. Less vibrant colours though, but less prone to reflection. Easy handling. Digitalness and lack-of-sharpness not so obvious.