I got the Superbright SS' for my fiver, while bright they do not have any harsh overtones and their fundamental is strong and assertive. I just tracked some great reggae bass lines with them just dimming the brghtness with the tone control. I too had a weird intonation thing on the D string. Not something impossible to adjust but the bridge is much more forward than it is normally.
But overall they are great strings.
But overall they are great strings.