From start; the salesman was prompt, extremely knowledgeable and informative, as to Tri-state?s product line performance, in comparison to competitor?s product line. I?m anal and shopped 5 different Window Manufacturers/Contractor. All the salesmen, with the exception of Tri-States, blasted the Competition. Big turn off!!! In some cases the Tri-State gentleman knew more about the competitor?s product line then their salesman. Their measure guy, was actually in charge of the installation mechanics, which gave me a comfort level, knowing that he critiqued the job to the installers, before they arrived. The Installation was methodical and like surgery. They installed my windows without destroying my moldings!!!! My friends all had issues with destroyed molding! The installers; all were courteous, neat and able to communicate. There was an issue however; of a ripped screen!!! The very next day the installers showed up and replaced the screen. Couldn?t believe the service! What a pleasure! The siding I choose was the 46 Gauge (their private label) but knew it was Alside?s Charter Oak.In front they used 25 footers; so hardly any seams. Salesman also recommended an insulationboard with 6.2 R value. The installation mechanic?s were excellent, communicative and extremelyeager to please me with any changes I wanted to make. Cleaned up every night, which amazed me!!! My neighbor's had guys that left debris around for the whole time on the job. My windows are incredible, I live on a busy main street and don?t hear the traffic and no more Drafts! Siding is on straight and beautiful. My comfort level with this company is extremely high! I also have Lifetime Warranty on my Widows & Siding + Labor!!!!!! A++ Tri-State !!