Hi
@CoryGillmore,
If possible, I would suggest extensive demos before you make your decision, often times, reading doesn't tell you much about how you yourself will precieve the sound which makes a lot of difference.
Not against recommendations, have done that myself on many occasion but I always trust my own judgement, especially ears when it comes down the final decision.
Also, what is important to remember is what your expectations are?
Speaking from my own extensive demos, a lot of fun can be had with the M7 though yes, this is subjective & personal...
Other factors involve source quality, DAP &/or otherwise involved, etc.
Since you are in the US, there are countless meets, Canjams, etc for you to attend, even Sony has their own dedicated outlets for you to experience the IER series for yourself.
Either way, it wouldn't be hard to demo.
Count yourself lucky where you have these options, in most other countries, it is incredibly difficult to demo certain gear as well as there being a no return policy.
As a final note, I am not aiming to convince you of anything, just putting down my humble two cents.
Whatever you choose, don't forget to enjoy the experience...
Hope you have a great day !