I went ahead and calibrated my speakers to 85db and in my opinion it has a more seemless sound across the front stage. Of course that will all change when I get my VGT and VGC.
What source of test tones did you use?
If you used the receiver's test tones it is now +10 dB too hot (although you may very well like it that way). If 0 were the reference volume setting, you'd now need to set it to -10 to be at Dolby reference level.
Calibrating to 'reference level' is really only for movies although getting each channel roughly equal benefits all sources. As a typical movie soundtrack has an average level of -30 dBFS and the receiver's test tones are also at that level, you want the SPL meter to show 75 dB: 75 + 30 = 105 dB = reference level.
Keep in mind that a source with a much higher average level, for example CD, will be MUCH louder at the same volume setting.