I have used a number of stocks on my HW80. Currently my FAC .22 has a CS500-simple uncluttered lines perfect for 'sporting' use. My 2 legal limit 80's have CS700 and my favourite CS800. I recently acquired a lovely CS500 for my HW95 which suits it perfectly.
In terms of price the CS stocks are very reasonable whereas the more exotic examples-Gary Cane to name but one-cost a lot of money. The original Venom stocks are lovely but hard to find. Th modern CS ones are perhaps not as nice but provided you get one with the rosewood cap and properly fitting butt pad you won't be disappointed.