I've never done WW, but I have some friends who have. The basic concept behind the two is similar (you have a limit of points/calories that you have to add up each day), so I don't think switching from one to the other would be all that difficult.
I kicked around the idea of WW before, but the biggest push for me towards CC is frankly, I'm cheap! With all the free online tools, phone apps, etc., it seemed silly for me to pay someone else to use their "system" when I can do it myself for free.
I also know that slow, steady weight loss is generally much better for you, but wow...the people I know doing WW seem to lose SO slowly. I wasn't out to drop 50 lbs overnight, but I don't think I would have the patience to be happy with 1/2-1 lb/week or whatever. On CC my weight loss varies, but generally I lose 1-3 lbs a week. A little less lately since I'm getting lighter, but of course that will happen with any plan as you approach a healthier weight.
As always, what works for one person doesn't always work for another and I think any plan that is healthy and proven (i.e., not some crazy Hollywood 500 calorie diet) is great as long as it works for you. If you want to give CC a try, I say go for it. If it doesn't work, you can always go back to WW.
Oh, and congrats on your loss! I hope to join you in onederland real soon!