Yes, you are left clean. In terms of diffculty, here's a bit of a 1-10 chart
1-Snap Change
2-Erdnase
3-Shapeshifter
4-Paint Change
5-Shake Change
6-Duck Change
7-Erdnase Sideways
8-
Polaroid Change
9-Axis Change
10-Clipshift
These are a list of the easiest to the hardest card changes in my opinion. Although there are a myriad of changes, (beyond 10!) these are just the ones i picked. (1 being easiest, 10 being hardest)
Hope this helps influence your decision!
-Dom