If you are looking for an Axe you wont go far wrong with one of these Bad Boys. I am part of a Empire sponsored team and we used these for over 3 years, have of the team used them in their standard format with no upgrades, I used mine with a different barrel as did a couple of others but really apart from a barrel there is no upgrades needed.
If your budget is £500 odd then I could sort you out with a loader, axe, barrel kit and you would still have some money left over for an air system (may have one of those as well !!)