Titanex
Back in November I treated myself to a Titanex Smock for my winter Cod campaign, I have always used my Flirtation suit before, but found it a bit bulky and restricting for casting.
I can say 100% that the Titanex is waterproof, warm ,breathable , lightweight , does not restrict movement, and compared to the flirty suit is much better for my needs.
A bonus is that it comes in muted colours, so it will no doubt get a few outings to the river as well.
Dave