the general choice for scopes seems to be.....
eb sniper, falcon menace, hawke tac 30, mtc viper fixed 10mag, and the above mentioned bushnell.
they are all used to good effect but are all personal taste. you may not get on with the scope that your mate swears by.
for me its a viper, i cannot praise it enough.
i cant comment on the guns as im not sure what youve got but if its a dommi and a 9003 then the dommi would be for me but if its a 2002 then either.
theres no doubting the capabilities of any top rifle but some are more adept to the challenges that hft courses spring upon you.
i shoot a steyr which is a far inferior gun (accuracy and build quality wise) to walther, anschutz, feinwerkbau, norica, gammo
etc but if i thought there were a better all round gun id go get it.
hope this helps.