I'd also add AKG Perception 170 to the list - the Perception series are AKG's budget line, but the 170s have sounded sweet whenever I've used them, and I've found some recordings on the LMA using these as well. The LMA recordings tipped the balance when I was deciding whether or not to pull the trigger.
The 170s' drawback: no interchangeable caps - they're standard cardioids, and nothing else. Also, I haven't seen official matched pairs for sale, but mine at least sound identical.
To my ears, they're warm-sounding, with good bass (low pipe organ notes come out very nicely), and clear midrange and treble. They aren't $1000 mics, but they're still a noticeable step above the LS-10 internals - and the internals aren't bad.