Very nice.
Honestly I don't think I have anything to add or whatever. It all sounded very awesome, and I loved how the ending was a throwback to the beginning. Honestly I would have loved to have heard a harmony in that part leading up to like a huge climax in the end, but different minds, different ideas.
And what are you talking about 'crappy Spider 3'? I have a Spider III 75 and have absolutely no problem with it. Honestly I would like to be able to record without having to mix later on, but that's something I need practice with anyway.
You could look into XLN Audio's Addictive Drums. It's pretty amazing, and you can import the samples you already have into it just for random mixing purposes.
Also, since you use Reaper you could get into that Rock Band thing where you create your own tracks to RB and sell them. You could actually make a profit off of it. I sure as hell would buy your songs. Anyway, keep the metal going man.