Yo Tyland:
Don't know much about "loop" stations. However, forget getting a 4 track. It will limit your creative ability sooner or later. Go for at least 8 tracks or 16.
I have both. The 8 tracker is
a Yam MD8 -- easy to use out of the box, but it does have its complicated parts too -- but these "parts" won't tie you up when you wish to record.
With a 4 tracker, if you bounce tracks you lose control of individual cuts -- thus, two tracks bounced to a 3rd track will only let you tweak the track, not the individual instruments you bounced -- bad gnus.
For the money, the MD8 is a good box and you can use a couple of data discs for years.
I am now learning my way around my Yam DAW 2816 -- great sounds but I'm glad I had experience with four other units, including the MD8 -- it helps me understand the DAW, and the folks on this site are a great help too.
So, that's it. Go for 8 tracks to begin and, later, maybe 16 or more.
Green Hornet
