should i do it?

[ram69]

hello all.was in the store today playing abit with m9.right now I'm still using my rezound which has been holding up pretty good but starting to get a bit laggy now so I know the m9 would be a world of difference and a big upgrade for me.i still have my unlimited data with Verizon so being that I cant buy it outright means that getting this phone means I lose my unlimited data.so my question is is it worth it?now a few things I did notice on the phone is playing videos and music in the store that with the volume anything lower than halfway you just about cant hear it.full volume with the background noise in the store was not really that loud at all.this more or less normal with this phone?the only other thing that bothered my was doing things with it one handed kept feeling like I was going to drop it.don't know if it was because of that security thing they got attached to the back of it was not letting me hold it right or not but just curious if anyone else has that issue with insecurity holding it.thanks for any insight.