Want to buy a lenovo mobile. Will it cause problems later?

I want to buy lenovo smartphone of following features: 
1. good memory,RAM, ROM 
2. It should be a strong mobile even if i use it continuously 
3. I should be able to use it for atleast 3 years (should not collapse & should be reliable) 
4. large display 
5. should not be slow 
6. most important to me is phone should carry many apps and I should be able to use for years and years