MOP or CATA

Hello world,
I have played WoW since Vanilla and quit retail when CATA was released. Well I never went back to retail and just continued on MOLTEN playing WOTLK, then the moltdown happened and I'm still here on WOTLK. It being many many years later, I've started to be a little bored with wrath and I'm looking for something new. I see mixed reviews on MOP, although that is where I would really like to go, but I never gave CATA a proper try.
I'm here requesting from the community on their inputs for my next move.
1. I like to PvP
2. I also like to raid
3. Questing is big for me, and although I would prefer the rates to be lower, I can live with x7. so how badly are they bugged?
4. Is one server more stable than the other?

I know Warmane is focusing ALL of it's efforts on WOTLK so the others have fallen to the wayside, but I would like to stay here if at all possible. So, what does the community think of Warmanes MOP and CATA servers?

Don't go Cata It's dying realm.. i got there 2 bis chars that im trying 2 sell badly.. Mop is okey, but nothing new.. wow will be same thing in any expansion only new mobs quests etc.. in general same thing.

I learned playing on most pop realm is the most fun..

Is it dead because it's not getting any love?

How to answer better.... It's dead, therefore not getting any love, and it's not getting any love, therefore is dead.

only WotLK is worth playing on warmane, if you wanna play Cata/MoP find another server
Cata is okay-ish on private servers, MoP is still buggy but playable, you can get loremaster on both altho some quests in Pandaria have funny bugs and lack phasing - it's hard to script this suff correctly I suppose

overall I prefer MoP, because there's just so much content and so many fun things to do and places to explore - you can pvp, you can raid, farm transmogs, achievements, battle pets, rare mobs, trasures, mounts, timeless coins (xD)... it's a really good expansion overall, IDK why people complained about it so much (amg, pandas? wow is a kinds game now!)

Choice between these two?

I'll pick suicide

Cheers