My experience of these comes from being an elementalist, where i seemed to have a choice - have a staff, which would usually come with an energy bonus, or have a wand and then a 'left-hand' item that would have the energy bonus instead. For both, the max i had ever seen was +12, with (if you have the money) a possible upgrade (ie staff head) of +5.
Atm, that is the route i have gone down with my new monk - i have a basic rod, and then a left-hand item with +11 energy. This gives me 41 in total, yet i have seen monks with 60 or more energy. With the right armour ( the stuff that looks like tatoos) i could up my energy to about 50 (assuming i can somehow get enough rolls of parchment

The only assumption i can make is that there are monk weapons, or left hand items that have a greater energy bonus than +12, or upgrades with a greater bonus than +5. Is this right? Are they expensive? If not, what can i do - it's gonna be a while before i can get the mesmer elite for nicking energy from enemies (forget what it's called) and energy tap without a lot more points than i want to put into inspiration just sucks.
Thanks for any help