I like this guide, but I am curious as to why you took scaling HP instead of armor.

something good about spirit's visage (i think it's this, y'know that green armor built with the red ball) is that it increases lifesteal. by using the bloodthirster you can get a total of 24-25% lifesteal, and the unique passive of bloodthirster will generate the shield quicker. it's an optional choice to counter close quarter champs and i recommend getting this last.

I just made an account to point out that in your "pros and cons" category, both of them are labeled "pros."

Could I get some advice when laning against Rumble?
I specifically don't know how trade with him in lane (or even if should try at all).
Would Hexdrinker be the right item to buy if things are going badly?
Last time I just got bullied out of my lane.

Thanks in advance.

Sounds good^^. I'll give it a try later!

Edit: As you usually play against difficult early matchup like Renekton/Ryze, I still prefer the BoTRK for the survivability. Then if you are against an easy matchup like a Yi or a Yasuo you should consider finish the Triforce first^^.

Nice Jax guide, but you should make a match up section to explain how Jax does against various enemies. Also, I see people like Dyrus finishing a cutlass and then building triforce; I think this is the optimal route in patch 4.5+ given that LS has been nerfed and tri has been buffed. Tri (along with a cutlass) is now jax's most powerful option and gives him a larger power spike than BotRK/sheen imo.