I used to own a 4099 back when they where new but never liked the clamp on guitar and mandolin - great on fiddle though.
If I would be in the market for an attached mic it would be the Bruce Bartlett guitar mic. I have the mandolin version and it sounds great, tried it on guitar with awesome results. Here is a link (they offer three different versions for guitar):
https://www.bartlettaudio.com/produc...hantom-powered
Nice: They are far less expensive compared to the DPA 4099.