I have very good impression with logitech products in term of quality. My last mouse MX1000 lasted me 6 years, and that was due to worn out left clicking, functionality still working. I changed to Razer Mamba and it's definitely not a good mouse. Occasional loss of signal for no reason and the quality is way below logitech...feel so much plasticky. The left click also worn out in 9 months. Waiting for it to breakdown totally and will switch back to Logitech either M950 or G700. M950 feels very solid and comfortable as MX1000. Just my thought.

Go for G700. I still loving every bits of my G700. My review as followed: