Quote Originally Posted by tyntynfx View Post
MT4 PROS:
1. Yes, it is user-friendly
2. Stable
3. Allows automated trading with a huge community behind it and thousands of free EAs available.

It does lack some things which may or may not be important to you, though.

CONS:
1. Charting is pretty good, but trend lines often look different on different timeframes.
2. Trailing stops are client-side, which means your MT4 terminal must be open for them to work.
3. No If/Then or OCO orders available, making it tougher to apply certain trading styles.
4. Some of the MT4 brokers are scams, and MetaQuotes knows it, yet does nothing about it.
MT4 works hard when you have a stable Internet connection. The execution is almost perfect.