We got tired of restiching all our outdoor sunbrella projects at least two times before the fabric needed to be replaced. We switched to Tenara thread for all outdoor projects and have never gone back. The thread is clear so it color matches whatever you sew with it. With LS1 or LSZ1 oscillating hook bobbin, it would have been better to get the Sailrite HDPE Lifetime thread, but it was not available when we got our Tenara.
It took some fiddling, but I was able to get our LSZ1 to sew perfectly with Tenara.