Brother P-touch label makers

[BCOURTER <0550703@ACAD.NWMISSOURI.EDU>]

I am in the process  of making a decision concerning ordering one of the
Brother P-Touch electronic label makers, and am trying to decide between
Model 320, 340, or 520. The vendors don't all seem to have all of these
available, or else they list them under different model numbers-I can't
quite figure out which it is. If you have any of these three models, I
would really appreciate hearing from you as soon as possible, as I need
to make a decision soon. I don't want to get more machine than I need
to make shelf labels or any misc. labels which might come up. I know I
want to print at least 2 lines, and in several different widths, and
I've also been warned about the cost of the tapes, so I will appreciate
it if you limit your responses to a reccommendation of one of the above
models.

TIA,
Barb Courter
0550703@acad.nwmissouri.edu