We went with Home Depot and used their no interest/no payment thing to finance it rather than pay out of pocket. That allowed us to pay it off in a year with no interest and keep our savings intact.
You can stand by the window in direct summer sun and not feel the prickling heat.
Our previous house was F&J and we had 12’ of glass at the back of the house with 2 4’ glass panels and a 4’ sliding glass door. That was replaced by glass panels and sliders from HD along with all the other windows in the house in 2 separate purchases - both with no interest on the HD card. Made it easy then too and before the installation you’d feel the sun through the big vertical blinds. After, the blinds could be wide open and you’d feel zero heat radiating through.
It will make a big difference over what you have now - get the ones that do block the thermal radiation.