I am a new airgun shooter but have been shooting firearms for 45 years. I have an Airacuda Max in .22 and have enjoyed it so much I would like to add a .30 cal. for larger game. I am looking at the Umarex Gauntlet SL 30 and the JTS Brawn. Both get great reviews and I think either would work for me. My only hesitation is the lower air volume. Is there a quality .30 cal. with a bottle that could be upgraded for under $800? Thanks in advance.