I agree with the Gossen recomendation. I have had LunaSix 3S and LunaPro F and both were very good. As already said, they are cheap to buy at the moment. I preferred LunaPro F as it has a zeroing scale and is easier to use. It also uses the easy to replace 9v cell. I am using a DigiPro F now which is more modern, digital readout and AA cell. It is an excellent meter which does incident, reflected and flash readings.