Hey, soon ill have 6300 IP and i still dont know which solo top should i get first Rene or Vlad
Rene can get fb on lvl 3, vlad is only strong at lvl 9....
so guys, which one should i buy first

Renekton<3

I would go Renekton. You could try him out when he becomes free.

Renek is stronger if u can play him vlad heave no chance 1 v 1 with Renek

this is kinda situational.
Renekton excels at early and mid game but falls of in late game.
Vlad is the opposite he's weak early, strong in mid and godlike in late game if played properly.

Both are good but vlad forces you to play passive for the first 6 levels, while renekton goes for total lane dominance from level 2 onward.

Kinda depends on what you want: Vlad-> a tanky ap/bruiser with high sustain and damage and no cc, with a slow base ms and a mediocre escape. can also be played mid.
Renekton:-> a tanky ad/bruiser with strong sustain, a cc and a dash as well as an ulti that gives hp. Can push really fast and has a decent base ms.

If you play top only then go for renekton first, since he counters way more champions on top then vlad does.

You're thinking of old Vlad, the one who had abysmal cd on his low lvl q. Vlad is actually quite good on low lvls now as well, sure you can bully him 1 - 3 no probs, but when he hits 4 he can hold an even ground with quite a lot of tops and he just keeps getting stronger from there on.

Renekton is Fun but he'll get "Owned" against Vlad (From my experience from both sides)
So if you want awesome champion for Solo top then take Vladimir :]

Vlad is better

The question here is not who is better, but what is your play style.