A better phone plan

So I’m looking for a better land-line phone plan for my Mom (nothing higher tech than that) in Berkley, MI. She’s got nothing special right now but and I was looking at Talk America mainly for it’s wider local non-toll calling (a good chunk of SE Michigan). It’s about 22.95 with a wide non-toll area with toll calls for 7.9 cents and long distance for 6.9 cents (for $5 more you can get Call Waiting, Repeat Dialing, Speed Calling 8, 3-Way Calling, Call Return and Caller ID). She doesn’t do much that falls into those extra fee calls (and she could probably just use a phone card for those at 3.9 cents a minute) so I might just pick Talk America but I know I’ve seen them advertise better promotions in the past. I think it was cheaper when I got it and had 3 extra services included. Anyone know of any offers/promotions to switch? (I think she’s with AT&T now).