Hey, does anyone know (or can recommend) places/services to have a table sign and/or banner printed up?

I don't do a whole lot of conventions every year, and I wouldn't need an enormous one, but I've never had one and I think it might be nice to change that. It would be a little bit nicer and more professional-looking than my current laminated piece of 8.5x11 paper. c.c; But yeah, I've never had a banner made before, so I don't even know where to begin to look. I may work in traditional media, but I do have enough past graphics experience to put together a file suitable for a printshop, so I don't really need a design service. Am looking for decent quality, durability, and relatively affordable, and this isn't something I need in a hurry. I'd just like to parse and price some options for the future.

So if you've had a table sign/banner made in the past, or know somebody else who's had it done, and had a good experience, please let me know!