I own the SF900 controllers. Similar system. The batteries die fast. Buttons stick 5% of the time. Then as the batteries get worse it moves to 90% of the time. Play control is always as issue. Other than that be careful when saving. You need to press SELECT+START at the same time (start SLIGHTLY before select to be safe) otherwise you will reset the system. So when the battery is low you're just as likely to lose all progress as you will to save. SO SAVE OFTEN. Battery lasts around 3-6 hours of prime use. Another 3-6 of trashy play. It's great for RPGs. Mid for shooters, fighters, or anything you need strong quick play control. Some games don't work. Many are Japanese only. Even some that were released in the USA. There are games that are duplicates for no reason whatsoever. Typical issues. I give it a 7/10 because of the selection, price, reliability. It's a great system for entry to mid level people who just want to casually play. He was wrong about the emulation. It's very good. I've had no problems.