The installation of the MOTU MX4 wasn't hard at all and only took a matter of minutes to have the virtual synth up and running.  Since I am running the synth in MOTU Digital Performer, there haven't been any compatibility issues and I haven't had any other problems relating to getting the software to work either.  The interface of the MOTU MX4 is pretty user friendly, but it did take me a little while to figure out exactly what everything does as there are a lot of parameters and features to this virtual synth.  In fact, I'm still learning things every time I use it as there seems to be endless possibilities when it comes to this versatile synth.  The manual is put together well and it is probably a good idea to have it around while learning it just in case you have any questions about what something does.

SUITABILITY/PERFORMANCE

I can't say that I've ever had any problems running MOTU MX4 as it seems to run pretty smoothly.  I tend to only run one at time, but if you needed to do more depending on your machine I think that you could do it.  I'm currently running the virtual synth on a Mac Book Pro that has a 2.2 Ghz Intel Core 2 Duo processor and 4 GB of RAM.  I run the software in MOTU Digital Performer 6 and since they are made by the same company it always runs stably for me.


OVERALL OPINION

I've only been using MOTU MX4 for a short while as I'm only starting to get into using MIDI, but I've come to really like this virtual synth in short time that I've been using it.  This is overall a great sounding synth and is capable of getting a ton of different tones.  The presets are great and the endless amount of parameters assures you that you will have total control over your sound.  The price of the software is reasonable and since you can get so many different sounds you are getting a nice bang for your buck.  If you are looking for a great virtual synth to use in Digital Performer or otherwise, the MOTU MX4 is one that must be considered.