I'm thinkig of buying a Lenovo IdeaPad G700,could anyone advise me for or against?

Lenovo is the best of the Windows based laptops.

They are a solid machine, not the best possible pricing for that spec of laptop but certainly not bad. Lenovo is a solid brand, only complaint I have heard is they are sort of annoying when it comes to claiming your warranty.

Cheers and Good Luck