First of all, I recommend this DAW (digital audio workstation). There's a reason it's number one, so this review is just to point out some highlights for the informed consumer.
1. VALUE - This comes out on sale during Steam sales, usually bundled with Z3TA+2 (a synth plug-in to MC6). This is the deal to get if you see it come up.
2. INTERFACE - The UI is crazy, and its fun and creative, but rarely intuitive. Get ready to invest a lot of time in it, it is not standard.
3. CREATION - The ability to extend via plugins, record via MIDI, plot notes with the mouse, drop in audio clips, real-time jam via an effects matrix, record audio, add synths, drop in software instruments, mix and so, so much more is simply unparralleled. There are many ways to get your tune in, from a jazzy Christmas Melody to a desktop-clearing Dubstep Bass beat. If you're creative, then there's an outlet for you.
4. MIXING - If you're more on the mxing side, MC6 offers many ways to mix, from fx chaining, automation, programs, presets, track control, input-output chains, and more (I just can't recall all of them, there are many). I was able to achieve a very professional sound from raw tracks and a polished sounding end project in no time.
5. CONTENT - MC6 ships with a good selection of content, but IMHO not enough. You have standard clips for various genres (MIDI & WAV) but I found myself buying premade collections outside of Steam (well worth the investment) as well as scouring the net for freebies.
6. OUTPUT - MC6 will output to various formats, including lossless (WAV, FLAC) and lossy (MP3). I output to WAV and use 3rd party converstion tools to create quality OGG and likewise. Since you can set your output quality, you can generate CD sounding compilations (of course, start with high quality samples).
7. PLUG-INS - This is the best MC6 feature - there are many available plug-ins: a few shipped with MC6, some free on the Net, and lots of commercial ones. With MC6 you get TH2-Creator (an amp sim for amazing sounding guitar), a great Drum kit with both pattern sets and varying sounds, some instrument banks as well as the Cakewalk synth with many, many sounds. Package in Z3TA+2 and you have an industry leading synth with a huge soundbank and incredible sound creation potential.
8. COMMUNITY - This is a sore spot in v6 considering it is realeased end of 2013. There are NO community functions: you can not collaborate on tracks over the cloud, outsource components to fellow musicians, or communicate in real-time. They ship with SoundCloud integration so you can share your finished music over the Net but that is not collaboration. I'd really like to have the option to bring someone in to do vocals or lay down a bass track over the Net, all the while in my project. Hopefully v7.0 will consider this (essential) feature.
9. SUPPORT - Forget it. There are 8.1 glitches and Steam installer probs, as well as broken directory paths in the defaults. Absolutely no respone from the MC6 support team, despite numerous open tickets. Solution? Community forums. But not Cakewalk.
Ok, back to jamming...