As noted above, Metoes could afford to 'farm' the jungle a lot because his lanes pretty much NEVER lost (C9's laners dominated most other NA laners) and they had superb communication on when they would gank and when they would push afterwards. Neither of those situations are true in solo queue; your teammates will lose lanes, and, you can't communicate as quickly with them on when you're going to gank. Meteos didn't have nearly as good a showing vs. Fnatic at worlds, because his laners didn't have such an easy a time and needed more help.
To the questions:
- What champision hve high jugle farm/money and build more damage items?
None of them. In solo queue, the only way you get more money is to either gank or farm a lane when your laner is out.
- Can you suggest some more junglers who fit this style?
Most of the above posters have nailed it. What you really want is fast-clearing, mobile junglers like Nocturne, Elise, etc. Don't rule Zac out though; his mobility is quite awesome and once he has a few ranks in his E and he's a great teamfight initiator lategame.
- Status of Hecarim after nerfs. Some builds?
He's effective if he gets gold, which as per above, means ganks or lane farm. He's not terrily effective without them.
- Some good damage items for Vi and Hecarim.
Vi -> She scales with AD, so Brutalizer and Spirit of the Lizard Elder. Frozen Mallet is also solid on Vi due to slow + health scaling on her passive.
I would only pick 2 though; Spirit of Lizard Elder + Frozen Mallet or Brutalizer + Frozen Mallet is all the offense you should ever build in a normal match. Vi will melt when she uses her ult otherwise.
- Some tips to play against really good Vaynes. (I played against one who, i think, was doing elojob, with unbelivebles mechanics for Gold).
Vayne's ugly once her Tumble is on a low cooldown. Play champs with double-gap closers and some form of CC, like J4 or Vi. Any jungle with a single gap-closer and she'll Tumble + Condemn and you'll be kited. To be blunt 'damage focused' junglers in this case normally don't have the CC to deal with Vayne, and Vayne will outdamage them badly late-game.
Note that overall, the jungle is not a place to build true 'carries' unless you gank early and get kills (not assists). Even considering that you'll have a lane opponent, you still get more gold / xp from lanes, unless you're a melee champion facing a ranged bully in-lane. This is also partially why melee carries are so rare right now; lanes can be dangerous due to the bajillion ranged bullies in the champion pool now, and, the jungle just doesn't feed them enough gold to get big.