coins.ph and BuyBitcoin. Both appear to be well operated, economical, and offer normal exchange
what's the daily volume of these?
Unknown by me, as they do not publish that information on their web sites.
Hmm... never trust these sort of small exchanges. They can crash at anytime and your coins can disappear. At least never store your coins with them.
Yes be careful with those types of exchanges they can disappear and take your coins with them. Never hold any amount of bitcoin in those types of exchanges except when they are more trustworthy and popular.
I say forget about anything that isnt the main exchange ones unless you want to be a pioneer and try for yourself a service that may very well be a scam.
If you HAVE to then do it quick and dont leave a single satoshi on there.