I collect 2 thing, pretty much:
- Optimus Primes
- "special-edition-black-repaints"; as seen here:
http://www.cybertron.ca/boards/showp...&postcount=319
And that's why Nemesis Prime is usually the best thing in my collection: fits both as a Prime and is very often an exclusive or rare piece or other. (now I just need a BT-17 Nemesis Prime)