I have a 980ti and an X34, it's quite an investment so it'd take something pretty special for me to switch. If AMD released a Titan XP killer at £500 then yes, I probably would. But that won't happen, the corporate world just doesn't work like that. If AMD produce a high-end competitive card, they're going to charge high-end competitive prices. Titan XP is ludicrous at £1100, the only short term realistic upgrade path for me is 1080ti.