Hi Okan,
I like the PCY's myself, and the two obvious advantages are that cymbals
are cheaper than pads, and it is easier to mount the cymbals higher than
it would be to mount the pads high. The pads do have a more solid
mounting system, which may result in a slightly stronger bounce than
cymbals mounted on cymbal arms, but I wouldn't think this is too much of
a difference.
By the way, if you're looking for great deals on add on pads or other
components, try talking with Ed at www.drumbalaya.com . I got some
TP80S's from him that were very reasonably priced and in great
condition.
Walt