As Roger said, about what Phil said, and what others said,

some very good advice given, I'll just echo what was said, so that others can say that Ari said, about what Roger said, about what Phil said, about what.... OK, sorry, I'm tired today.
Part of the thrill for me is the "hunt" for that special knife, your tastes and expectations may change over time, but I have always enjoyed the hunt for the knives, I find the hunt can be just as much fun as actually getting the knife. Don't rush into a purchase unless you're pretty sure about it, for me, scouring the internet with some money to spend, knowing I could buy a knife I really like, and looking for it, is a very nice feeling, and lots of fun.
Also, as Phil said, I would suggest saving up for a knife you badly want, rather than get a cheaper knife you like, but don't love. I sell collectables for a living, the main piece of advice I give people is to buy the best quality they can afford, even if that means they have to pay a little more, because later on, as they begin to expect and seek out higher quality, they usually regret the less expensive, lower quality things they bought when new to collecting, and they often take a beating trying to sell off the lower quality stuff to now afford the better stuff. I see it all the time. As a collector myself, I would always rather have 1 great thing, than 3 good things.
Good luck. And despite what WoodWorkLes says,

have fun, buy what you like, and don't do it to make money.