MY advise....Figure out your budget first and foremost, they are not cheap by any means but a great investment.
Then got to several dealers and get on them and drive them around the lot, play with the controls and so forth to see what fits you the best.
Keep in mind dealerships for repairs, you will have problems at some point and time whether it is new or not! A close relationship with your local dealer (with notable reputation) means a lot if you are broke down or need parts.
If you think 30 hp is big enuff and your budget allows go ATLEAST a size bigger if not two sizes, you can do a small job with a big tractor but can't do a big job with a small tractor. I am saying this from experience !
I chose a JD 3520 and looked at them all, it was a tuff decision between JD and Kubota but my fiancee's uncle sells at my local JD dealership and I got a few extra penny's off and I can usually get in if problems arise.

It has done what I have asked of it but like I said earlier, I wish I had gone a size or two bigger. I have gotten a hold of a few round bails of hay that it just couldn't manipulate with the FEL. A few more HP and little extra weight goes a long way and the physical size of the machine does not change much at all.
I looked at JD, Kubota, Case, New Holland, Mahindra and Kioti