I've used mtd strings quite a few times. Theyre quite easy to find on
www.juststrings.com www.bassguitarstrings.us used to carry them, but last time I checked they dont anymore.
MTD's are a nice fairly full sounding steel string. not quite as full as DR highbeams, but not as hollow as Daddario pro steels. Ken Smith steels are also very similar. Any of those strings will get you a rather similar tone.