Lenovo or Acer?

Which one should i choose considering the following specs:

Lenovo Y50-Z70:

CPU: i7-4710HQ 2.5GHz-3.5GHz
RAM:8GB is it easy to expand? i mean do i have to break open the full laptop or not?
GPU: GTX860M
Storage: 1TB SSHD
Screen:TN Anti-reflective
VRAM: 2GB DDR5
Price: €939

Acer Aspire V15 Nitro:

CPU: i5-4210H 2.9GHz-3.5GHz
RAM:8GB is it easy to expand? i mean do i have to break open the full laptop or not?
GPU: GTX860M
Storage: 1TB SSHD
Screen: IPS Matte
VRAM: 2GB DDR5
Price: €899

+I heard...

Lenovo or Acer?