Zildjian Hi Hat : K Light vs K Custom Dark

Hey guys ! :)

I'm here to get some pieces of advice.

I'm going to buy a new hi hat to replace my paiste 101 (My first hats, don't laugh :P )

I'm looking to top quality hi hats. I play mainly Rock (In a band) but i like to play some jazzy and funk stuff.

I first saw the K 15" light Hi Hat. Maybe one of you got one and can help me. What do you think of it ? Will i be able to perform in the style mentioned a above. ?

But i saw a kind of great deal on the internet, The K Custom Dark 14" Hats at only 290 (Their are used but seemed like new).
Maybe one of you got one and can help me. What do you think of it ? Will i be able to perform in the style mentioned a above. ?

So What should i do ? Take the K Custom which is cheaper or wait to have the money to buy the K 15" Light new (in store, i didn't find it on second hands websites) ?

So if you could let me your thinking about those two pairs, it would be nice.

Thanks for the help,

Renaud (From Belgium, sorry for the english mistakes if there are some :P )

Zildjian Hi Hat : K Light vs K Custom Dark