My Vision waders never survived the winter, even though I have not used them that much.

I've tried repairing them but there must be 4 seperate leaks, with a couple on awkward seams.
I need to invest in a new pair of breathable chesties, and after looking at the options with a budget of around £150 (don't need boots), I thought that the Greys GRXi's look favourable, but am interested to hear if anyone has bought these and has any experience of there quality and performance.
...or would anyone recommend the Airflo Streamtec's or anything similar?
Thanks for your help