Hi. What is the best Arduino that can handle an ethernet shield, 2.4 inch tft lcd display, capacitive sensor, photoelectic sensor, ultrasonic sensor and servo motor? Thanks. We need it for our capstone project 
I DONT KNOW, IT DEPENDS ON WHAT YOU ARE DOING.
And why are you shouting?
What is the best Arduino
Depends what you mean by 'Best'
Cheapest.
Fastest.
Smallest.
Easiest.
Lowest Power.
Etc.........
agraceluna:
Hi. What is the best Arduino that can handle an ethernet shield, 2.4 inch tft lcd display, capacitive sensor, photoelectic sensor, ultrasonic sensor and servo motor? Thanks. We need it for our capstone project
Start by assuming that the Arduino UNO is the best choice. Look at the pins use by each shield. I think the TFT is going to be a big problem since the inexpensive ones, like the $8.95 one sold through Walmart, use a LOT of pins: "Uses digital pins 5-13 and analog 0-3.". Unless pins 11-13 are used for an SPI interface there is no way for it to share those pins with an SPI device like the Ethernet Shield. Can you find a 2.4" TFT device with an I2C/TWI/Wire interface?
Based on your use of a shield and capacitive sensor (touch sensor?), I would say a Due.
To access all pins when there is a shield above the DUE, there is the Mega Screw Shield (works for DUE too) at Cross Roads Electronics
