I have an S200 which cost me £175, fitted with a £200 MTC scope and although I have not yet won any comps, I have come very close on several occasions. Every time out however, I do finish above Steyr's and similar top end guns. Been shooting HFT 18 months or so now and until the gun is below my ability then why spend money? If the MPR in the Ginb was mine, swapping would not even cross my mind.
If you can't fix it with a big hammer, your hammer aint big enough....
Air Arms S200 Tench Reg, Tilly's Custom Stock, MTC 3-12x24