2000 996 Cab - new top twillfast?

[LI911]

I have the standard delamination of the rear window on my 2000 996 cab.

I just spoke to a local top guy and he suggested replacing the whole top with "FSG Twillfast" which he described as the same German canvas as GAHH without the label.

The price quoted was $1,300 ($750 for canvas & $550) for installation.

Has anyone used Twillfast? any opinions are appreciated. I know I can get the GAHH for about $900 and he'll still do the $550 for the install. I'm just wondering if it's worth it.