Thanks great info guys, is there any brand better that i should use

I have been using Dot 5 in all our restorations since 1981 and have NEVER heard of an issue from anyone. Keep in mind that most of these cars are not being daily or even multiple weekend driven cars and sit more than anything. For our daily driver restorations we use Dot 3. Our main reason for using it is for safety during the restoration as for the reasons mentioned earlier, it won't harm paint and is non corrosive. I don't care how careful you are, you WILL get brake fluid spillage someone sometime.

Silicone fluid should never be used in collector cars, Period. Moisture will enter the system regardless of fluid type used.
Moisture will not mix with Silicone,It will mix with Alcohol based fluid.
When you flush out the alcohol base fluid the moisture goes with it.
This is why fluid must be changed every 2 years. Most manuals state this. Very important with anti lock modules.

I did Dot 5 in my 78 T/A. My mechanic reeommend it. He owns an all GM repair facility, Plus like said here, when you bleed the system, all the detailed painted parts don't get ruined. It works great. However, I replaced my lines and had everything rebuilt, only flushed out part was the prop valve.
The fluid in the back when I did it was nasty. Dot 5 is the way to go. I was just thinking, it's been 17 years already, time for a flush and refill.

I sent my OG master and calipers out, they only had 40 k on them but like mentioned, brakes are the most important thing on your car, I also sent my booster out to a guy in Portland, booster Dewy, he does awesome work, re-plated it as well. The whole price for all was $750. Pretty cheap, you gotta stop, lol

I am using Dot5 in my restoration. Glad to see others have done the same.

I have also been using DOT5 for 20 years with no issues. Just flush and refill every few years to evacuate any trapped moisture.

Dot 5
 

DOT 5 in all my non ABS cars. Flush the calipers and rear cylinders every couple years like you should do on ALL brake systems anyways. All DOT 5 regardless of brand is manufactured by Dow