I think unlimited is fine with friends. We all play casually and no one's gonna be insane enough to spend a few hundred bucks buying BOXES of boosters. In the end, unlimited or not, I find if anyone is willing to throw in enough cash, anyone's gonna have an awesome deck. And even a noob should be able to win if they have a big advantage from having a very good deck. But even in limited tourneys, we see the same cards/archtypes being used over and over again anyway. Whenever it's a tournament of any format, I expect to see the same 3 or 4 different types of decks being used because everyone that's participating in the tourney is probably serious enough to spend a few hundred on getting the best cards they need. I honestly find more variety in decks in less serious, casual playing, because people will actually go and try out new decks/strategies, since there is no big stake for losing. Although Tourney (of any format) and just casual playing is both fun in their own ways.
While Hold'em is very fun, I laugh at anyone that says I'm a "professional" poker player.
That game is more or less full of luck. You can have your bag of tricks or theories on reading people. Yes, THEORIES, because there is no one set guide on how to read another human beings mind/actions, and to throw in the fact they can be trapping you, poker face, using reverse psychology, it's all luck.
The only skill comes in understanding the probabilitiy of cards, but even then, it's still luck. Anyone can still win with offset deuce 7. If some total noob goes all in with that, and gets freakin lucky and lands a full house somehow, he wins.
The cards do the talking in the end, regardless how much "skill" a player claims he has or not. Most players are man enough to just admit they lost. Unless you're Phil Hellmuth, the biggest crybaby I know of. He'll come up with some stupid excuse about his loss. Like the other players were talking too loud so he couldn't think. He's a joke.