Both MikroC and MPLab have their plus points. both have their in-built libraries of peripherals like adc, lcd etc.In MPLAB, programmer have to include header file of corresponding peripheral but in MikroC, there is no need to include header files.
MikroC provides some good facility like graphical LCD bitmap editor, usart terminal etc.
mplab compiler is created by Mirochip tech. so tutorial on mplab c are widely available.