Trees:
1-15 Regualr Trees
15-30 Oak Trees
30-50 Willow Trees (You can start cutting Maple Trees as 45 Wc but it is very slow)
50-65 Maple Trees (You can cut Yew Trees at 60 Wc but it is very slow)
65-99 Yews (If you are members than from 68-99 it is reccomended that you cut Ivy)
Axes:
1-6 Iron or Bronze
6-21 Black or Steel
21-31 Mithril
31-99 Rune
61-99 (Members) Dragon (If you can afford) or Inferno Adze if you have the requirements and do not care about losing some logs