There's about 10,000 possible (GOOD) answers to your question. With a little luck, I'll give you one. My hope is to give you a little info that will help you sort out what it is you want.
#1. Set a budget. How much do you want to spend? How much CAN you spend? Remember, this includes all the implements, as well as the tractor itself.
What specific jobs are you set on doing yourself? If you plan on using an implement ONE TIME, then never using it again, you'd be money ahead to rent or borrow that item, leaving more cash available for things you need on a full-time basis.
Are you dead set on new? Used? How "used"? ((Some real bargains on older tractors)
Is there a dealer nearby? Unless you can do 99% of your repairs and maint. yourself, a good dealer support effort is a MUST.
How much prior experience with tractors do you have? Some are more "entry level user friendly" than others. For example, if you aren't going to be doing heavy tillage, a hydrostatic transmission is MUCH easier to operate in a confined area. (You'd be suprised how often "confined areas" rear their ugly head on a farm)
What are your FUTURE plans? Do you anticipate expanding your operation? If so, don't under-size your tractor needs.
Now the options.... Cabs can add a tremendous amount to the bottom line. HOWEVER.... They sure are sweet! Very few tractors are available without power steering anymore, but some still exist. I'd stay away from ones without. (ESPECIALLY if you ever intend to have a front loader) 3-point hitches are just about standard on everything nowdays. Older tractors may or may not have them. You don't want anything without one. Same with live power (PTO) No live power equals major PITA. Another option (with older tractors) is diesel or gas. Make mine diesel. Safer, cheaper to operate, better power, and MUCH longer life. (Just be carefull with OLD diesels....Rebuild cost can be more than tractors value)
OK.... Now the "choices".... I'm going to give you MY OPINION... Shortly after that, everyone else will give me a NEW opinion.....
I'm a big fan of John Deere, then Kubota, followed by New Holland. There's literally hundreds of models to choose from within those brands. Narrow down your "options needed" list, then walk in to the dealer and ask what he can show you with those features.
NO, I'm not going to tell you what tractor I'd buy. Just HOPEFULLY, let you know how I'd form my desicion.