It isn't the midi controller that you need to invest a decent amount of money in in order to produce professional sounding recordings...it's the vst's or sound samples you use, quality plugins, and some understanding of composition, arrangement, mixing, mastering and sound modeling.
All a midi controller is is a user interface, like a typing keyboard. That's like saying that you need a top notch typewriter to be able to write a bestselling novel.
This is my latest composition using my Axiom 49 and almost exclusively Native Instruments vst's:
https://soundcloud.com/nika-gordham/the-one
Here's an electronic version of a popular Christmas song that I did last year - also using almost exclusively Native Instruments vst's - just playing around with sounds:
https://soundcloud.com/nika-gordham/carol-of-the-bells