The new Evo X looks lovely from the outside. I haven't really seen the inside of the new one, but if it is anything like the last 9 then
For the last 9 generations:-
+ 4WD is awesome, accelleration is awesome, Handling is awesome
Each to their own, but I personally couldn't stand the Evo 4wd and handling. OK, if you are used to the glorified electronic traction control that is commonly called Haldex 4wd, then it might be fine.
I personally found the Evo handling to be extremely unrefined. I found the traction to be horrendous. When pushed really hard on wet roads, it was a case of "slip-grip-slip-grip-slip-grip" - as the electronically controlled diffs dialed in and out the power. I actually went to RalliArt in Dudley, and tried three different versions, one completely standard, another with a stage 1, and finally a stage 3 makeover. They were all aweful. When I questioned the RalliArt rep, he said that was how they were designed to work. I then took him for a blast in a Vectra GSI I owned, and the handling was nigh-on par with the Evos, but without any of the electronic intervention!
So my opinion of Evos =
Servicing costs are roughly double that of your normal GTI due to a 4,500mile/6month service regime.
I'd say in financial terms, servicing costs about 4 times as much as any VAG.
Don't forget, many Evos are often heavily modified, as often they promise much, but in reality, fail to deliver, without spending shedloads more on go-faster bits.