That's overstating it a bit, Der, but I know a little. I don't know all the electronic kits, but I would recommend
Yamaha over Roland or
Pearl.
Two great electronic drum sound modules on the market are the Roland TD-20 and the
Yamaha DTX III, but they cost plenty. One great thing about
Yamaha is that they use sounds from the DXT III module in their cheaper modules -- really great sounds!
I also thought
Yamaha rubber heads had a more realistic rebound than Roland's mesh heads.
I researched
Pearl electronic but never played a set. My drum teacher did, however, and he didn't care for the
Pearl electronic kit at all (he had played Roland electronic previously). Can't remember his specific reasons.
I think even in the lower price ranges you'll get good sounds from a
Yamaha kit, and the sounds are what it's all about. Yes, you can plug headphones into the
Yamaha module, and I believe you can with all electronic drumsets.
I played $3,000 Roland and
Yamaha electronic kits side by side, and I thought
Yamaha won hands down. Great sounds, more realistic heads. I upgraded the bass drum pedal and throne that came with my kit, but other than that, I am very pleased with
Yamaha quality.
In the drum shops around here, I see plenty of electronic kits set up, waiting for you to try them out. That's something you definitely want to do. Your ears might like different sounds than mine.
Have fun making your choice!