Elliptical Trainer??

...I'm torn. It's been a bit difficult to get to the gym these days. And going to karate once or twice a week doesn't give me any cardio exercise and leaves me with little more than a headache from being tossed on the mat. (We're learning to fall, throw, and be thrown in karate right now, and I'm not sure that I'm liking it!) Going to the gym would be cheaper, but I need to figure out WHEN I'd go. But, methinks that I would like to get an elliptical at home. Does anyone out there who still reads this thing have one? Does anyone have any reccommendations? I'm thinking of dropping a chunk of change, but don't know which to get.... *sigh*

...needless to say, I'm feeling a bit more comfortable financially. *winks* I'm not rich, by any stretch of the word, but I'm soon to be credit card debt free!