For a lot of less money some months ago I bought the miniSynX, that anticipated the new engine of its big brother...
what to say: it's very buggy (it makes strange noises altering the sound when you play notes that it shouldn't absolutely do) and sounds like their new Laser Harp makes clipping my Cubase CPU/ASIO engines, while instead I work easily with more than one U-He Diva instance in divine mode.
Xils Lab synth seems to be just unusable for me.
Just one of their new Laser Harp patch (the one with number 46 in the name) is much better than their previous patches (I mean the ones that listened coming from Synthix1) but still it's not sounding like the real Synthex one!
The resonances of the sound are totally wrong, for example...
I had to modify a lot of parameters to get nearer to it (so I really wonder about the programming capacities of Xils Lab team at this point, considering that I've never beeen a so good sound programmer) but yet mini Syn'X and Syn'X2 are not near as much as Nostalgia sampled Laser Harp sound (that recently I modified and powered up with real time controlling also).
I have the Per Kristian's Laser Harp patch too on my Virus B, but for sure the Nostalgia's sound is the best emulation we can have for now without owning an original hardware Synthex!
Also for other sounds, as RV2 arpeggio strings I made a better one on Sonic Projects OPX PRO 2.
The same for the RV sweeping pad.
Perhaps on miniSyn'X I have found a couple of very good basses (one could be good for RV4) but I think it's too little to justify the purchase if you are chasing JMJ's Synthex sounds.
Glad to have spent very few money to risk on it, because till now my miniSyn'X remained completely unused for my Jarrish tracks.