I'm at a loss for words.  I honestly don't know how to explain what has happened to my amps.  I started with Odyssey Mono Extreme SE's (Glass Ceiling); phenomenal in their own right, and had them changed to Kismet+'s with some Klaus add-ons.  I've got maybe 100 hours on them, if that.
For reference, my system follows: 
DVD/Laser Disk    Sony BDP-300 (Blu-Ray)
Cable/Satellite    SA8300 HD (HD DVR)
Video Display/TV    Pioneer 5080HD Plasma
Digital Source    PS Audio Digital Link III Cullen lvl 4 moded (DAC), Sony CDP C77ES (5disc changer)
Preamp            Odyssey Candela
Power Amps    Odyssey Kismet+ monos (Stratos Case - Fronts), Odyssey HT3 (Center and Surrounds)
Speakers         Kef Reference 205/2's
Speaker Cables    Auditioning KCI Firefly's (incredible cable, more to come on the KCI stuff)
Interconnects    KCI Firefly DAC to pre, KCI Pegasus (Digital Coax), KCI Soundbolt monos to pre, BJC (Toslink/HDMI), Groneberg 
Power Cables    VHAudio Flavor 4 (amps), VHAudio Flavor 1 (DAC), LessLoss (pre), Groneberg Reference
Racking            JSP Bolero Credenza (espresso)
Power Con      PS Audio Qunitet
I've been listening to as much as I can over the last few days, from Alison Krauss, Norah Jones, Eric Clapton, Miles Davis, Jack Johnson, Yo Yo Ma, etc.  I just finished the Dave Matthews and Tim Reynolds BluRay in 2-channel.  I've tried to listen to a variety of music in order to get a feel for the changes in the amps and I'm just continually saying to myself....WOW!
If I were to differentiate the Glass Ceiling Stratos to the Kismet+ I'd say two things, clarity and impact.  Everything you listen to is smoother with a level of clarity I haven't heard with the original Stratos Monos.  Bass impact is much improved, but it isn't just that...there aren't any weak areas I have been able to find.  There is no harshness in the highs, mids are smooth and clear, bass isn't boomy or missing.  It's all just transparent, clear, tight, with impact.  
I'll have to concur with previous assessments of the Kismet's - they are a significant improvement! 
Last words:  Tim Reynolds is amazing and these amps accentuate his brilliance with the guitar!
More to come, but again...WOW!
Mark