I agree with Jack.
On the software side of things, all
you need in your DAW is something that can load an impulse file. There are loads of
guitar cabinet impulses out there. Plenty free, also some very nice commercial ones.
My amp has a direct out WITHOUT any cabinet modelling hardware on it. All it is
is a chunky monkey of a resistor and a jack socket coming out of the back of the amp
this direct out straight into my recording interface and then use the cabinet sims. It's
very good indeed IMO and certainly outdoes the hardware cabinet sim built into the
Blackstars (my only experience of a hardware cabinet sim).... My little Blackstar is a
great little amp for what it does but the 'direct out' is a poor imitation of the actual
amp sound. My main amp 'direct out' plus the Redwirez feels like far less of a compromise
and I can VASTLY alter the tone with those impulses. With the hardware solutions, you get
what you're given and then the fighting starts
For impulses, I use these http://www.redwirez.com/
They have a freebie Marshall cab to get you
going so you can see if this kind of thing works for you.
I take your point
that the hardware solution is handy for live. If you can get a box that gives you the
simulated out and just a plain old line out whilst keeping your amp happy then you've got
the best of both worlds