See there is nothing like best area of Electrical engineering. What may seem best for me may not seem best to you. If you are asking this in terms of placement, well this is again dependent mostly upon a lot of factors. However many students prefer to study VLSI, Power systems and Power electronics etc to name a few. Which are the best colleges? Well IITs definitely followed by NITs and IIITs. There are university engineering departments too for each state. You can appear for GATE and get admissions here.