I am doing research to buy my first PCP looking for a hand pump friendly gun and think its between the gauntlet .25, the Aspen .25 or the Marauder .25 so do I go with a cheap one to start or do I go straight to a good one. Next I don't even know if I have any places locally to fill a tank but would like to have one if possible. Don't want to spend a crazy amount right away so what's a good tank and a good tank size to start with. Any info would be greatly appreciated.