Same here, I've recently started to use Knot too Kinky titanium wire and I haven't noticed any difference in catch rate. It's really thin (same as 5lb mono) and is nice and supple. I'm very envious of the standard of perch fishing you have access to, I'm lucky to get anything over a 1lbRob,
I catch Perch on a fly rod with a wire trace and the rivers I fish I always will owing to the numbers of Pike. I hear people say "You will catch more without a trace" the same debate happens with discussions about lure fishing for Perch." Ditch the wire and use fluro you will catch more". Perhaps but I've caught over 50 Perch over three-pound mark from my rivers while using a trace, and I'm happy with that ratio. I love a small Crankbait for Perch. Not had any over 3lb on the fly rod as of yet, but I'm sure I will.
I realise those figures are nothing like the bags of large Perch the lads are pulling out of the large ressies. I've had a couple of trips on the AW water venues over the years, really enjoy a day afloat. But I'm at my happiest miles from anyone on the river.