I have Wii Fit Plus, EA Sports Active, and two regular games. I bought a refurbished Wii off
Ebay last year, so I got it for pretty cheap, $150 if I remember right. It didn't come with the random game disk. It does come with the Wii-mote and the nunchuck.
Wii Fit Plus is a lot of fun, the games are fun, and it keeps track of your weight. My sister in law bought it for me as a Christmas present. It works a lot on balance and form, but not as much cardio/physical stuff. I like it because it gets you at least MOVING - good for us that haven't truly exercised for years, and haven't done much but short distance walking for a few months. It comes with the balance board. The balancing skills come in handy when it's been a long time since you've used your muscles - helps you have better posture and actually prepares you I think for honest to goodness exercise.
The EA Sports Active is MUCH more exercise like. I bought it at
Walmart last year. You do about 20 exercises or so a day, and the person shows you how to do them. It makes me sweat and get my heart up, and I'm usually mildly muscle sore the next day, but that's even getting better now that I'm toning up finally. They mix things up with standard exercises (lunges, bicep curls with a resistance band, etc), and then do "fun" things like boxing, tennis, inline downhill skating, and dancing. The routines are about 30 minutes per day, and it has a 30 day challenge which includes rest days. It comes with a resistance band and a leg strap to hold the nunchuck. The resistance band is kinda chintzy, I think I'm going to buy some real ones.
I prefer doing the Wii thing because I abhor gyms. My workplace pays for nearly ALL of the cost of a gym membership at a local gym, but I have no desire to go, and really, no time. The Wii is here at home, no one care about my lovehandles flopping or if I get sweaty, or if I look ridiculous. No one is standing and watching me so they can have their turn. I can workout at home, when my kid is sleeping, so no need to find a babysitter or whatever.