There not many really stable and usable samplers around unless on have a couple of hundreds of spare cash to pay. Since release of SFZ player there was nothing on the market. SF play is not bad, but it has issue with filtering. Well it has no filtering at all. Nowever, there is a solution for you...
It took a while for market leaders to come up with a product that will cover most if not all sampling needs and will be free. Camel Audio stepped up and release Alchemy Player that ment to be a player for their propietary commercial sampling libraries, but has ability to playback SFZ files and apply proper filtering on top. Needless to say that Alchemy Player sharing the same filters and playback engine that is the core selling point of the flagship Alchemy product, give prfect results and sounds just brilliantly amazing.
Alchemy Player has comrehecive set of modulation avaliable at your disposal featuring 16 performance controls for real-time tweaking and automation: delay, reverb, filter, vibrato, tremolo, ADSR, Cut off, Resonase and more. That's alot and more the some of the commercial paid-for players do.
It also supports round-robin and key-switching plus unlimited keyboard zones and velocity layers.
It is avaialbe for free download at Camel Audio web site.