I think the best thing to use for online payments is the paypal service thats only because i trust them and i bought allot trough paypal so and i dont trust the paying method of bitcoin he is to new for me maybe in the future i will use it.
Most of the people are not much aware of bitcoin and also using paypal for there transaction compared to bitcoin transaction. The major reason behind this is paypal has been using various commercial ads to promote them as well it has got a guaranteed return back policy which is yet to be implemented in bitcoin.