Racer I have done some racing, on and off-road, but never really was a hard-core racer mostly due to time and money concerns. Now that I have a little extra of both, there is no place to race. A similar category that would fit better is basher. I have a few runners that definately are not the prettiest, but still put a smile on the drivers face. I have lots of spares for those, many of which were accumulated by buying spare cars to part out.
Modeler - I do have a couple of shelf queens, but they are far from perfect examples. I definately do not have the attention to detail or artistic skill to fit into this category.
Collector - I do admit to prefering hop-up parts to be new in the package, but also can't resist a nice used example if I don't already have one NIP. I have overpaid for some parts, but try to not make the hobby a complete money pit, which is hard at times with so many neat items floating around out there.
Hoarder - I am definately heavily tilted towards hoarder. I have a jrx-T I'm waiting to build completely from NIP parts. I've got just about everything I need, but can't bring myself to open up the packages. If I start to build it I won't have all those nice NIP parts left to think about building.
I've bought extras of parts when I can find them, just so I can use the one I already had on a build and still have extras. I tend not to hoard lots of used parts and projects. I finish one, sell the extras off and then move on to something else. usually 2 projects later I realize that I could have used the parts I sold off a couple months ago.

I've only got 3 rc-10's and 2 of them are completed
I have bought parts I didn't need because they were cheap, and I can't resist large lots of losi stuff. I enjoy wrenching so I tend to buy cars to clean and rebuild and wind up selling many of them to keep the habit going. I wish I had the room and finances to keep everything I've bought, but just can't justify keeping more than 25 or so at any one time.
so like many above I'm a combination of several.