Just bought Technics SL-1200GR. Now I am looking for the best HI-FI cart from Ortofon 2M PnP and Concordes Series. Please advise. The idea: Trouble-free, plug-and-play cartridge with best possible sound quality for Technics SL-1200GR. Bottom line: The cart fits geometrics of Technics SL-1200GR. It gives me the best possible sound quality. It tracks like a champ Options available: Ortofon 2M Series PnP 2M Red PnP MkII 2M Blue PnP MkII 2M Bronze PnP MkII 2M Black PnP MkII Concordes: Concorde 40 Anniversary The Concorde Century Concorde Pro S (historical, but still available second hand) as a base for OM styli upgrade Others??? Worries: Do I need to adjust arm-height with those? Do I need to use auxiliary weight with those? Any other problems you experienced? Thanks!