Cortland Competition Nymph Line

[Rabmax]

Hello All.I do a lot of nymphing with a french leader especially early season.Still catching quite a few fish but this downstream wind that's been around for weeks now is doing my head in :x.It's making me think about buying one of these might be better for windy conditions.
http://www.garryevans.co.uk/cortland-precision-competition-nymph-fly-lines---save-20-5028-p.asp
Does anyone use them are they any good.Cheers All