From options you provided, the i7-4702MQ is the most powerfull processor (i7-4500U is only better in power consumption)
http://cpuboss.com/cpus/Intel-Core-i7-4702MQ-vs-Intel-Core-i7-4500U
The better graphics are Radeon HD 8850M but it consumes a lot of energy, the others are same class with a...