Hey Markus, I reamped your DI's with the same profiles, as well as used my own guitar through them. They all sounded the same, so I don't think it's a technical issue, just one of taste. I generally agree that those profiles have too much on the high side. I generally find I need to turn down Treble and/or Presence on many profiles for them to sit on less busy mixes.
Multi-tracking them is also going to cancel out a lot of the high-end, especially quad-tracking. Then, in a metal, hard-rock mix, with plenty of cymbal action and some high-end to the bass as well, most of it ends up being inaudible.
For dryness, a touch of reverb can help, but the best thing is usually turning up the Power Sagging on the amp.