My agency now has 14 Pinnacle bars in service, including the one on my car which is all blue with 6 split Blue/Amber in back. We are very pleased and they have been working great. They are not quite as bright as our Legend bars, but are brighter than our Arjent SL & S2 bars (in my opinion...the Legend is just crazy bright.) Ours are the standard power units, there is now an option for double the LEDs and full split colors 360 degrees. All the officers really like them, they look good, the LED TD & Alleys are nice, and the colors are true. Blue is a nice royal blue and I haven't seen any hint of teal.
I have also sold and installed 12 or so Pinnacles to two other agencies recently and they have also been pleased. I have had no issues at all and installation is straight forward and overall very similar to a Legend or Arjent S2 bar as it uses an external interface box. Just wire your controls to the interface (SOS calls it a break-out) box and it communicates with the lightbar using a phone-type cable (not Cat5). Lightbar has a ground and power cable as well.
Do read the instructions through and follow them especially regarding the mounting sequence.