chicitybeats...
First off, let me ask you, why do you feel that you need to get Pro Tools? Is it that you are not comfortable with the FL work flow? Is Abelton too much of a live performance DAW for you?
If its just a matter of what DAW your using, the question you should be asking yourself at this point is do you really want to take the time and energy to learn another DAW? I can tell you that for the most part, just because you get Pro Tools doesn't mean that your quality will be any better. Pro Tools is just an industry standard but sometimes standards are only "standard". If you get my drift. They aren't any better or worse than what your using. Its just a different type of workflow that your going to be dealing with. I can tell you right off the bat that Abelton gives you more features as far as beat production goes.
Also, if you do want to run Pro Tools, you must buy one of their interfaces or else you can't even run Pro Tools because it is a proprietary system (so your emu is out of the picture). I'm guessing you would want to run LE (something like an MBox 2 or 003 setup...) so you would need a digidesign interface. Might I also add that emu interfaces are really good to begin with. Digidesign interfaces get their pre-amps from focusrite (which are almost as bad as behringer's) and their AD/DA converters are some of the worst in the industry actually. You might be asking yourself..."well then why do all the pro's use it?" right?
It goes like this....
Pros just use the Pro Tools interface because you have to in order to "run" Pro Tools on the computer. But they don't use the pre-amp or converters built into the interface. They spend thousands of dollars for specific pre's that they like and for a converter that is really accurate on top of buying the interface (which is at least $10,000 to get a HD system up and running). But there are places that specifically focus on upgrading your MBox 2 or 003's components but that will still cost you about 600-1500 more on top of the initial purchase of interface. But like I said, thats what the pro's or serious enthusiasts use. If you just get a stock Pro Tools rig going for your studio, its not going to sound "bad" persay. Its just not going to sound any better or worse than what you got right now. Its not what you got, its how you use your knowledge with whatever is in front of you.
So I hope that helped and if you want to give me a specific reason then please let me know and I'll go more in depth into your situation.