I'll have a more detailed thread post coming, but here's a sneak peek of some before and after sound clips. I installed bother their SPEQ Series and also their Overland Series Exhaust on my 4th Gen. My personal favorite is the Overland Series Exhaust. It has a raspier sound on start-up and isn’t overly loud or “drony” while driving. Their SPEQ series, on the other hand, is a bit more aggressive for those who wanna hear their 4 banger Tacoma and turbos throughout the RPM range. With the reel below, the stock version of my truck is a tad louder than normal due the NYTOP axel dump exhaust I previously installed with no resignator in the truck anymore.