I have a 1k. It's way brighter than the coil ballast I had, but the fan is super loud. I mean so loud I'm not sure I want to get another one... I also had mine just shut off on me several times. I'd go in the room to check on my girls and find that the ballast was on and running but the red light was on and the light was off. I took it in to my local shop and had him send it back to have it looked at.
The guy in the shop says you can spray the fans with a little wd-40 to reduce the squeal. I haven't been able to try, since I haven't got the ballast back yet..
I'm about to buy 4 new digital ballasts within the next couple weeks so please keep the best digi ballast opinions coming
Has anyone had their digi ballasts interfere with their wifi networks? Which ones get the hottest? Has anyone tried wd-40 to quiet the fan on their nextgen?