Apogee are the gold standard. The SQ-420 is good value if you don't mind not having a physical meter but needing to plug into USB instead. I personally use a Seneye Reef. There's some argument about accuracy with certain versions ( V4 specifically) but they're past v6 now if I recall and whatever issues have been resolved. They update firmware automatically anyway. I would consider the seneye the best value but you also need a computer/laptop near by. Considering you basically set up your lights and then put the meter in a drawer, it might be a best option to just rent one from BRS ( or any retailer who rents them) or even get one from a local reef club.