Hi aadb.
This is just my opinion, based on years of experience....but when it comes to exercise, I have found that it's best to do something you really enjoy and don't have to force yourself to do or else it won't work long-term.
For me, now....I love to walk while listening to my ipod. I love it, I enjoy it and I look forward to it. Years ago I did the whole gym thing but was never able to maintain it....because when it came right down to it, it was a huge hassle and I had to force myself to do it....not a good long-term plan.
Almost 58, I now feel it's important not to put too much stress on weight-bearing joints (mainly knees) and walking or swimming is great for this.
I also totally agree with an article sarahinparis posted on her blog....saying, basically....that exercise should be a cornerstone of health....but that dietary plan should be the cornerstone of weight-loss. I think that it's a great, not to mention a more realistic perspective.
And to follow the logic...find something you enjoy and can do forever...as you want to maintain your health forever. Whereas when it comes to losing weight, that always implies a limited time-frame.....so you don't want to connect exercise too heavily to it so as to only see it as necessary for a limited time.
Basically...do an enjoyable exercise that is not too taxing and that you enjoy...every day...forever. Because it's good for you. Whether you're losing weight or not. It's just a bit of a different perspective....one that I think is better for long-term success.
deena