I ran a MAG300 head for about 5 years, until last year when i got the LG1000, but ive since reverted back to a MAG600. Ive never had any technical problems/issues at all, and up to now the MAG600 is trouble free, great gear, solid and reliable IMHO. looking forward to years more good service and use/reliability I'm pleased with them and i dont see any reason to change my brands in the near future!!