I was hoping for more diverse siren tones but the ones included are adequate, I may try the MP3 version after my only favorite single tone gets old. (apparently different versions of 3 different sirens and the high/low chirp is actually half highs, and half lows) The momentary switch mounted on dash is essential for changing siren/chirp tones (both on same button) since cycling through the various tones requires that you know which Next one is to be selected and thus makes for many cycles through them all many times. All in all, a Nice upgrade but if you want fancy then go with the MP3 siren instead!
I had good contact through email including a tracking number allowing me to plan for my package's arrival. Overall, this was a good experience and i won't hesitate purchasing through Sonic Electronix again.
