Moving up a level to 10/20 limit

[poker999]

I have played at the 5/10 level for 4 months now and made about 25 000 $. Two weeks ago i started playing the 10/20 level and find it very difficult. My win rate is not close to the 5/10 level. I am about break even. Is there such big difference between the levels?

I play tight aggressive but find the players at 10/20 wilder than at the 5/10 level.

Is there a big difference in play between the levels?
Any comments?

I am thinking about going back to the 5/10 level.