Never had a problem Mate.
Even though it is very third World by our standards the airports are full of rich Japanese and Koreans etc and many high income Fillipinas will have all the gadgets too so its certainly not rare to see them, just watch your gear outside the airport but there is always security and police about. Make sure you grab a metered taxi and most of the decent hotels have security too and you will feel safe. Just keep your wits about you at all times in Manila, there are scams etc but generally i have a good time in the main parts of town with no worries really at all. The golden rule is to not act like a tourist but a guy that "has seen it all before."
Enjoy!