He has an accurate picture of what to do but do more larges tbh. At higher levels it's 1-29 c1; 29+ large and REALLY high level you might rush 1-35 c1 but larges are the bulk of your xp at any level.
You'd think that. However, getting upwards of 400k [or more] exp an hour while being able to AFK and clean up the house or train another account is great. Considering you have the extra funds, of course. If you're not so well-funded, then obviously choose a different option.
Perfect example is myself: A father. Hardly any time to play. Working on Maxing. Quite funded. Why not leech some exp and save the time. Works for me. Doesn't work for everyone.
Generally I like to either rush floors 1-29 on c1, either solo or with a small team. Anything from 30+ you should do large c6 5:5 (which is a 5 man team) for maximum XP.
Well if you can afford to splash a bit of cash into your account then i suggest paying for a little bit of leeching here on sythe . Some members offer great leeching services at really cheap prices .
then as an experiment I did 30-35 C6 Small with 5 people was taking about 10 mins and was getting about 10k exp. this works out to be 50-60k exp an hour if your quick
then I tried F36 Large C6 with 5 people and we got it done in 43 mins for 49k Exp which is decent.
So still not sure which is the best way to go about levelling :S Dungeoneering is such an awkward skill to decide on.