Haven't had any Vass gear, but I hear it's quite good
I have their insulated bib and braces and they have been excellent. Beings as I spend more than half of my time in the far East and have done for the guts of 10 years I must admit I've gone a bit soft when it comes to Scottish temperatures and they have served me well on the long days sitting at the wheel of the boat trolling 👍
Another of the more affordable brands that I have been suitably impressed with has been Taimen. I still can't get my head around people who can justify the cost of Simms gear. With the exception of their boots. They are worth every penny IMHO.
Cheers,
Steven.