Hi @SCM,
In particular you want the gain to be in the frequency bands you’ll be using, so a quad-band antenna isn’t necessarily better for this particular project unless you’re using those extra bands, but it might help if you wanted to re-use that antenna for something else down the road. I would (depending if you’re using 2G, or 3G), lookup the local frequency bands, and pick an antenna with good performance / efficiency in that range.
Thanks,
David