prints from slides

I'm looking to get some 5x7 and 8x10 prints from some of my color slides.

I've already scanned them using a Polaroid Sprintscan 4000. I scanned at
4000DPI and manually fixed most of the large dust and scratch artifacts. So
I'm wondering whether I should just get this printed digitally somewhere
(like ofoto.com or ezprints.com), or to send my slide somewhere?

Any recommendations? I like matte prints thus this eliminates ofoto.com I
believe.

Thanks,
Mike