Fiberglass tanks-Pressurized VS Non Pressurized

Does anyone have a fiberglass tank? There seem to be a fair amount of them on the market at decent prices. Also, I am wondering. How much efficiency do you give up going with pressurized storage versus non pressurized. Heat stratification is your friend. I am wondering if it is worth the extra expense for the HX ...

I sent a lot of emails to reps from differenct plastics manufacturers...nobody would commit to high temperature loads on fiberglass. Good luck with your search. I went with scrap propane tanks.

Same here. Plastics in general don't seem to be happy with extended high temperatures.

Thanks. Tuol - If I remember correctly you are going pressurized. When do you plan to be up and running?