I have the LR Baggs Lyric installed on my:
Cordoba RCWE (Nut: 55mm/Scale Length: 652mm/Body Depth: 63mm to 67mm)
and on a cheapie
Aria Classical/Nylon (Nut: 53mm / Scale: 654mm / Body Depth: 95mm to 100mm)
I also have a Fishman Blender & Kremona NG-1 on the Cordoba & Schertler Bluestick on the Aria. On all my plug-in-gigging guitars I have multiple pickups ... all you need to have is your pickup fail on you ONCE during a gig and shame on you if you don't manage that with a multi-pickup-solution
In any case, the Lyric is AMAZING on the thinner Cordoba RCWE, be it for strumming, tapping or picking. The Lyric does not have the warm midrange of the Fishman Blender's piezo/mic-combo, but, depending the venue or type of music I'll be playing on that gig, I may choose one over the other, or switch between the pickups. THE JACK IN THE LYRIC RATTLES!!!! The body is so thin, I can't get my fat hand in to fix/tighten it.
On the other hand, the Lyric sounds WAY too bassy and almost hollow with the full-size-classical-body of the Aria. If I use just a little of the volume of the Lyric, it is ok, but, start turning up the gain, it's way too much. Since the Lyric PU is made for the classical-nylon guitars, I'm surprised LR Baggs hasn't done much R&D on the sound issues that the Lyric has in my case. I'm But again, on the RCWE, it sound magnificent!
NO RATTLE AT ALL with Lyric inside the Aria. Since both Lyrics were installed by the same guitar tech, I'm assuming the issue is the fact that he wasn't able to adjust/tightened the Lyric's jack equally on both guitars. So, I'm assuming this is an installation flaw, rather than a problem with the Lyric itself.
On my Robert Garcia guitar I just have the Kremona NG-1 stick on the bridge, it needs LOTS of clean gain with a good preamp with lots of cutting EQ. I use the Garcia/Kremona live with a Sennheiser EW Wireless since it has the 1/8" cable option and the cable of the Sennheiser is the perfect length and the Sennheiser offers plenty of clean gain the Kremona needs. I have not wanted to stick the Lyric up under the Garcia's very responsive soundboard in the case that it made hinder it.
FYI, my Aparicio AA 400 (Nut: 52mm/Scale Length: 664mm/Body Depth: 90mm to 96mm) which currently has a Fishman Matrix (which sounds very nice indeed!) & Kremona NG1, will be the next candidate for the Baggs Lyric as I'm assuming the slighter shallower body depth may work for this guitar. I'll report back when it gets installed!
Hope this info helps you all! :0)