There are 3 basic 'style's of IR's I offer, the list below is ordered from least complex to most complex:
1) MMS
2) NEB/WAV
3) PRO
MMS (Music Maker Series) is pretty much intended for people who don't know much about mics, mic placement, and don't have the time or want to bother learning. That's not to say, however, that people well equipped with this knowledge can't benefit from the simplicity if the sounds provided are exactly what they'd be after with the more extensive libraries. There is much less to sort through, and things are labeled by the general sound (Modern, Traditional, Vintage, etc) rather than the mic or mic placement. All three major file formats are provided (Convolution Reverb Wave Audio, Nebula, Fractal SysEx)
WAV and NEB are the same thing, but broken down into different formats to lower the cost to users. This is the middle of the road in terms of verbosity, and you can get a taste for the basic layout by trying the beta files, though they are going to be more in depth than what is currently on the site. Depending on which package you get, there are different formats, however Fractal SysEx is incuded in both of them.
PRO is Nebula only, and moves towards virtualizing the cab micing experience. The next iteration is going to take this a step further, all while simplifying the procedure. I let slip the details on this post:
• View topic - OwnHammer Speaker Cabinets Public Beta (free stuff inside)
Hopefully users will chime in with their experiences, but my assumption is that the vast majority of them go for the WAV libraries. If you are very serious about recording, I'd highly recommend anything with Nebula in it. It sounds better than convolution reverb (in the DAW) and the slider functions allow for much easier control of blending in the special treatment options (Fat, Warm, Warm & Fat) without having to set up parallel sends and routing tracks all over the place.
