I’d recommend the later version scientific anglers system-1 (4,5,6)
it balances very nicely on the light weight
The system1 reel foot fits very nicely on the Phillipson slip ring also .
I’d also recommend you to score some Jim Teeny “first cast” wf6 fly line.
I’m sure Professor Bulldog will concur ..
He’s who I listened to when I was getting a Philly 6footer together.
To get the absolute best performance from these little rods please avoid the common mistake of underling this rod.
It’s not a 4wt !!
It loves a line with a short head taper that’s 5.5/6wt
If you don’t match the line on these lil phillys they won’t unleash the magic!
You’ll just flail it ,get bored or confused and not get into tune .
Fishing it as a 4wt makes you cast it harder which then “crashes” the fly on the water more so than if you just let the 6wt line load the rod smooth and proper and just kiss that fly on the water.
I’ve seen more people sell these lil rods because they try and fish it like a 3/4 wt and get the wrong impression on these rods .
Those who unlock the magic know what’s up and would never part with one of these rods !
Watch out though
using these killer lil rods could turn you into a “Phillipson Fiend”
Good luck with unlocking that magic!