Really? A new cube won't do sh*t. New cubers in generall these days tend to focus on incorrect things. Some believe that they HAVE to get a new cube to make it physically possible to get faster which is such nonsense. Use whatever cube you have and just solve it. Chances are rare that you will...
It would be cool if you made a new one where you would to something inappropriate, like distracting him during the solve. :P
Maybe something with this video http://www.youtube.com/watch?v=r2H-cnti8GI where he drops the cube :D
Yes it is normal. You will have to use it alot.
My old eastsheen though is really lose and turns faster than the lan-lans and v-cubes etc but the cornercutting isn't the best and it's kind of hard to controll.