Several of my friends at work have Medical Assistant degrees, but are working as aides. One friend with an MA couldn't get a job in a nursing home because she wasn't a CNA! Unless you really have your heart set on being an MA in a doctor's office or something like that, LPN appears to be a much more versatile degree, and I'm told the training for both is very similar. (I'm told by my friends with MA's, but I tend to believe them. They sound like they cover some things more thoroughly than my ADN courses.)
My nurse manager advised me against an LPN, as opposed to going straight into an ADN. Good advice, overall, but I sort of wish I'd have had the LPN training before starting clinicals. Nursing School doesn't spend nearly as much time as I had thought it would on clinicals. Looks like I'll be doing a lot of OJT, which is scary. (A friend with a BSN told me she went through 4 years of school, a month as a GN, and a month of orientation, and had never started an IV until her first day on her own as an RN.)
Another advantage as an LPN (vs. MA) is that you can do LPN-to-RN online, if that's helpful.
Anyway, good luck, whatever you decide. It ain't easy, but it is fun, in a horrifying sort of way.