ub3r_n3rd

New to the forums and new to painting minis. I have been lurking around the last few days after jumping in on the Reaper KS. I have a few questions for the experienced painters who do the larger minis. What do you use for the larger bases (i.e. 2x2, 3x3, 4x4, 6x6) circular or square? Material (wood/plastic/metal/other)? Where do you buy them (online site plz give URL or in-store)? Any help at all would be appreciated. Thanks, UN