Ah, yes. The fragrance world is somewhat overwhelming at first, eh? Anyway, lemme hit the high points:
1.) I'm in the camp that believes cologne should be used regularly. What's the point of shelling out on a bottle if you aren't going to use it?
2.) 1 Million is supposed to be good. Smells kind of like bubblegum, in a good way. It's also supposed to last a while before the smell fades, which is nice.
3.) If you're buying on Ebay, make sure the seller has good feedback. Fragrance fakes are fairly common, especially for popular scents like 1 Million.
4.) L'Homme is another good choice. It isn't very strong, and doesn't last particularly long, but it's safe (pretty much everyone likes it) and versatile (works just as well with a suit as a night on the town). I don't like Curve, but it's inexpensive and nets a lot of compliments. I don't really like Big Pony, and wouldn't recommend them (after all, if a company releases 4 scents at once, do you think very much work went into them? Longevity is bad and you can get much better juice for the pricepoint). Can't speak for Sex Panther, but I'd imagine it would be a nice conversation starter, if nothing else.
If you're serious about this, the addicts at Basenotes are a good resource. They have reviews and an active forum dedicated to cologne.
(Also, your spelling is fine.)