I'm looking for something small basically to clean filters, saws, fill tires etc. Any suggestions?
Air compressors are great for blowing off dirty saws!
If all you want to do is inflate and blow things off, you can buy a 1 HP compressor at home centers, Sears, etc., for $90 - $120. they typically have a small (1 to 3 gallon) 'hot dog' or 'pancake' shaped tank. Sometimes they are offered in kits along with some basic air tools.
They will still generate 100+ PSI, which is fine, as most car tires are 35 PSI, and blow guns are safety limited at 30 PSI. These compressors will also operate most pneumatic air guns, nailers, staplers, etc., if you ever plan on using those around your shop.
The bigger compressors (more HP and bigger tanks) give you more volume. This is needed for larger air tools (die grinders, impact wrenches, drills, spray paint guns, etc.). If you don't plan on using those in your shop, you can save a lot of money, and get a smaller unit that takes up less space and is easier to carry between the basement and the garage.
Compressors are not recommended for inflating high pressure bicycle tires, as they tend to fill them too fast, causing them to explode. Also be careful cleaning out air filters, as you can blow off the flocking with high pressure air, creating leaks. Your saw's owner's manual probably recommends gently washing the filters in warm soapy water.
Philbeert