Based on my travels, Death Valley and Jordan-Hare are louder than Neyland.
I was in Neyland in '98 and '04 for both UF losses. Yes, it was loud when we missed our kick and Wilhoit made his, but it wasn't consistently loud, especially with over 100K in attendance.
I was in Death Valley in '97 when LSU ended our 25-game SEC win streak and '07 when Les Miles converted a half dozen 4th downs.
I was also at Jordan-Hare in '01 when we were #1 and AU upset us, then again in '06 when AU handed us our only loss of the season.
Big game in Baton Rouge on a Saturday night is the standard...it's consistently ridiculously loud for 60 minutes. Their fans are relentless.
The Swamp is no slouch either...turn up the volume on this.
https://youtu.be/fpKy73Rojr8