I hate amp sims. They all sound equally as bad or good as you can make them. Some will disagree with me here but looking at your soundcard, you probably won't like them either. I did a remix for someone on this forum and he used GR5 and I changed them to Amplitube 3 and got good results. I am left with several thoughts on it though.
1. How the guitar is input is very crucial.
2. Active pick ups don't sound as good as passive.
I think a AI with a dedicated instrument input would do better than a mic/line input. My Octa-Capture doesn't seem to give me good results, or I'm just to spoiled by valves. I guess I just don't like them. Though I do use Ampeg SVX within Amplitube 3. I mix it with the direct input though I would love a good bass amp.
There is another option. I use a Blackstar HT-5 and it has an emulated output. I use that and get better results than an amp sim. There is a HT 1. I got the 5 because of the effects loop. You can use the send, from the effects loop, and input that signal as well as the emulated line out. There is software called "Torpedo", or something like that, where you can use the signal from the send and just use cab sims which are impulses rather than models. Impulses are convolution so they use more CPU. I haven't tried it with Torpedo but I have Pod Farm as well and you can use just the cabs with Pod Farm. It did pretty well.
HTH