Hi, I record my guitars using Ownhammer Nebula Irs, and it's the best sounding solution I've found. The sound is a little dry though and I'd like to add some sort of room sound or reverb, not really a spring reverb effect, just something to make the sound more natural. Is there a third part set, ideally 48 or 96k that excels for adding a little natural room ambiance or reverberation to guitars?
Are you more into clean and classic stuff? There is quite a difference between a 1x12, 2x12 and 4x12, let alone if you the vintage speaker-pack or the modern-speaker pack.
If you really want choice between what mic and where to place it (more like to the RedWirez-way) then the _older_ OwnHammer libraries are more like that (single cab, single speaker, lots of mics + positions) but they are older. The newer stuff gives you a single cab, lots of speakers, only some mics in a single 'good sounding' position. Easier to dial in, but less miniscule control.
So it depends what you want.
I think I have pretty much all his 'recent' stuff (1x12 vintage (deluxe cab), 2x12 vintage (bogner shiva), 4x12 vintage (marshall), 4x12 modern (marshall), 4x12 mesa v30en (v2 legacy style), 4x12 bogner standard v30ch (v2 legacy style).
If you have some amp'd tracks without a cab-emulation on it I can apply some stuff on it so you can see how it sounds.
edit: Actually don't know for sure if the 4x12 Bogner is an Uberkab or not. He calls it 'a 4x12 Bogner standard'.