Well, for the Switch it depends on whether or not the games are actually coming in 2018. If Bayonetta 3, Metroid Prime 4, Pokemon, Shin Megami Tensei V and Fire Emblem all come I'd choose that, but none of those have concrete release periods.

From what we know Sony > MS > Nintendo

If Lost Soul Aside comes out next year, then PS4.

Games that interest me that are expected to release in 2018:

Kingdom Hearts III (PS4/XBO)
Monster Hunter: World (PS4/XBO)
Yakuza 6 (PS4)
Dragon Quest XI (PS4/NSW)
Spiderman (PS4)
Shadow of Colossus (PS4)
Dragonball FighterZ (PS4/XBO)

I've probably forgotten a few, but so far it's PS4 for me.

~Edit~
Valkyria Chronicles 4 (PS4/XBO/NSW)
Persona 5: Dancing Stars Night (PS4)

PS4. I'm not going to separate it from VR, even though I don't own VR.
Although I am excited for enough PS4 games without even considering VR.

PS4.

Oh yeah, Shadow of Colossus for sure. Gonna edit that in and other games that come to mind over time.
Not sure about Ni No Kuni 2 yet.

PS4, not even considering VR, yet.

PS4 even without all the VR games I want.

Home console wise - PS4 no doubt.

That isnt including VR cause I dont care for VR.

For me the games I'm interested in

PS4
-Kingdom Hearts 3 (TBA 2018)
-God of War
-Digimon Story Cyber Sleuth Hacker's Memory
-Dissidia Final Fantasy NT
-Shadow of the Colossus Remake
-Yakuza 6
-Valkyria Chronicles 4
-Shining Resonance Refrain

NS
-Bayonetta
-Bayonetta 2
-Yoshi Switch
-Kirby Switch

3DS
-Kirby Battle Royale
-Radiant Historia Perfect Chronology

PC
-Secret of Mana Remake
-Lost Sphear
-Street Fighter V Arcade Edition
-Dragonball Fighter Z
-Monster Hunter World (TBA)
-Metal Gear Survive
-Devil May Cry HD Collection
-Attack on Titan 2
-Ni No Kuni 2
-Far Cry 5
-Street Fighter 30th Anniversary
-Mega Man X Collection
-Ace Combat 7
-Final Fantasy XV Windows Edition

There's a couple of other games but they are TBA.