no offense at all, but if you are counting on the wheel to get you onwars, then I wish you the best of luck.

as for buying on wars with cents, unless you are dumping thousands of dollars here, you would be better off saving your money or spinning the wheel to get useful items (maybe helm of mars?).

Niether way is the best way to lv a hero. Just farm a lot. Hit the same npcs over and over again ever hour if you are super impatient (Note: works better with lv5s than 10s lol).