Have 4wt and 6wt Wayfarer rods (7' 6" and 9' respectively), 6 pieces. I really like(d) the 6wt right up until I started casting the TFO Signature 5wt 9' rod.

I'm finding that the TFO is smoother and better suited to my style of casting (I'm the guy you see casting who looks like he's barely moving...that's how slow my casting is!) I really, really like slower rods. Again it's a question of preference and experience...I've been doing it for 5 years and I know what works and what doesn't for me. I did cast a ZG Helios 5wt 9' on the weekend, and couldn't get the hang of it- the tip is just too 'fast' for me. But that is one incredibly light rod. WOW!!
Do I keep the 6wt and use it for those 'possible' big fish I may encounter at some point, or do I try and sell the Redington 6wt and replace it with another TFO Signature in the same weight/length (6wt, 9')?
Opinions welcome, as always.
Cheers,
Jean