the modeling thing can be a great option....or not so great, depending heavily on what you are playing. I love it in some instances, and hate it in others. For example...modelers just cannot replicate the dynamics of what your fingers are doing and the variations of your picking attack. If you dial in a distorted sound on a modeler....it may sound great, but it will always sound exactly that way. Ya cant manipulate it with lighter picking and/or with the guitar volume like you can a real amp.
That said....if you are playing a heavy style of music, for example, and you are using a lot of gain and playing consitently hard all the time.........well it doesnt really matter as much. Real amp or modeler, this is going to be a very compressed, un-dynamic type of sound. You dont need a ton of touch sensitivity and dynamic for many styles of metal, and this is where a modeler can be very convincing because the parts that are most lacking arent all that important. And even with fantastic tone(respectively), many gain heavy metal tones are still a bit sterile even through a great amp. Thats just how it is. its what works. If there is one thing a modeler is.....its naturally gonna be sterile.
For other stuff, I just cant tolerate a modeler. It just sounds wrong and its totally un-inspiring. Ive been playing with modeling and studio recordings for a very long time now and i can make it work great sometimes, but not others.
Onto a good amp. A good amp can cover a ton of ground. Yes, your amp is good. On the downside.....you must have a good interface to capture it properly. You must have goot "technique" when it comes to micing. Repeat-ability is an issue so be very careful about documenting all your amp settings, mics used, mic placement, setting the trim on the input exactly the same, and all of that. Micing an amp can be frustrating early in the game cause it seems like its "hit or miss" until you get into a groove where you develop a routine. Your dual rec done right will sound great just like it does on all of those recordings that made the rectifier sound a coveted sound. Your dual rec done wrong can easily sound worse than a modeler dialed in on the fly. If you're patient and have a nice enough layout to record with, go for the real thing.