General

The best exp would be zak arm exp, solo or party but it's hard to get in and a lot of low level people attempt to kill it so it takes forever. For training I recommend newties they are a lot better than memory lane 1 but you can die very easily especially when attempting to charge piercing arrow.

Try soloing zak arms everyday, only if you don't mind doing the quests every week. ToT is your best choice. If you're stuck at like 95% and you don't feel like ToT anymore, pap on 1.2x

ToT is nice; Blizard, Dragons breath, walk forward while charging pierce, If your weak, throw in an Iron Arrow to finish them off.

Repeat. If you drop onto a smaller platform with many monsters on both sides, just quickly AE them.

Then repeat the first step on the bottom platforms, and use the tele to go back up.

Repeat on both sides.