I would use (and this is just my opinion) but Airflo Elite. It’s designed for softish rods like the WT. Works well with the Redington Classic trout series. But for rods that are closer to that traditional feel, it works well.
It’s a line made of polyurethane, so deet and sunscreen won’t hurt it like pvc lines. It also stays cleaner longer and won’t crack like pvc.
No, I owned 5 of them in different lengths and weights. Also 3 IM6 rods. The Peach works good on the rod, but I always felt the LT lines were a bit light. Although it will work. It just depends on what you’re looking for and how you cast. The OP gave no information, but being a 6wt I had to assume longer casts, heavy flies. and some wind. The Rio Gold fits that perfect. If all he’s doing is casting light flies on windless days. Why a 6wt?