I’m a fan of my Planet Eclipse Etha, serves me well and I still use it. The Etha 2 might also be worth checking out. Invert Mini GS or a used newer axe are also tried and true. Azodin also makes very reliable markers that you can find cheaply. The kaos and kaos pump both are reliable and affordable. There’s no “best paintball marker” it really comes down to what suits your needs best. You get what you pay for.(P.S, it’s a marker not a gun).