Done a bit of workshop clearing recently and now might have space for a small compressor. This would be mainly for dust clearing on router, maybe for mist coolant as well, both for router and vertical mill. I've never had a compressor, and have no idea what might be a suitable size/rating, or what I might do with it if I had one beyond purposes mentioned. Are compressors generally too noisy to have in the workshop itself?

Any comments or recommendations, guys?