Actually...
I would say having a computer will give you way more options than hardware would... It gives you a great screen to get a visual of your sequencing etc at the least. So in general, I would use the computer for that regardless of what equipment you have. A hardware peice of equipment is just that, you can't upgrade the options, it's not gonna all of a sudden let you upgrade to a few more buttons or add ons anytime ever, where software is always being advanced etc. So why would it have more possibilities. It's purely that hands on and actually fun with hardware I'd assume...becasue computer recording is sorta evil overall.
You can't go wrong either way, aslong as you go either way right.
I don't know enuff, but I choose the computer route because it was cheaper for me, also computers are becoming more and more the norm for audio and can be fast enuff to do thigs in real time etc, there not the cardboard box with buttoms they used to be. The only thing I hate is my computer wont shutup, the fan that's attached to my not even sure rattles and makes lots of noise, Lots of fucking noise, it will cost me a hundred dollars atleast to replace, so in a sense I'm sorta pissed. I'm gonna have to build some sort'ov crazy studio that I can access the computer and it's outputs without having it in the same room... It drives me insane, soon I'll put it back under my desk, but my headphones arn't long enuff right now.
Not that your computer will necessarily be as loud though.
Do alot of research before you buy, but odds are you'll make soem mistakes we all do usually when it comes to our first purcheases, so make sure your full knowledged and I can't help you much their.