Mac plasmid drawing program. Recommendations?

[ER at total.net]

We are looking to purchase a good plasmid drawing/sequence analysis
program for the Macintosh platform.  A versatile program that can
produce complete restriction maps of sequences that are both inputted
and downloaded from various databases, and manipulated forms of these
sequences, is desired.  If you can recommend such programs, or know of
web sites that describe such programs, please post a reply to this
message.

Thank you,
ER.