Room addition contractor recommendations...

[royr]

I am considering converting an enclosed lanai and extending it a few feet. making it a Florida room with A/C, etc. I have researched contractors and have found positive recommendations for:
Advanced
Xcel
San Mella
T&D
Gingerich
I have also seen some negative for Advanced and Gingerich.
I see ads for D&D and KB, but no recommendations either pro or con for them.
Does anyone have experience with the above contractors for a room addition type of job?
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Also, I noticed a few instances where someone on TOTV replies to a contractor recommendation inquiry with a glowing generic recommendation, and it was either their 1st or 2nd post. I wonder if that is someone posing as a typical TOTV user who is in fact either the contractor himself or someone who is connected to them financially. Just a thought.
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Any help you can give me with your experience with contractors who do this type of work would be appreciated.

[Philip Winkler]

we were very pleased with KB--Matt and Rocky. We glassed in our lanai, had 3m film put on and a Mitsubishi A/c

We highly recommend them.

[Bonanza]

San Mella just finished adding an entire room on to our house and enclosed our lanai into a permanent room (wallboard, took out sliders, A/C, raised the floor level, installed windows and doors, etc.).

PM me if you are interested in seeing his work.

[hulahips]

We used advanced. Their prices are very good but yes they are slow