Worthless
The plants grew huge, flowered, but never produced tomatoes. We shook them like the instructions said, but zero tomatoes. On top of that, over the last few weeks, it has gotten very loud. Sounds like the pump is loosing a bearing or something. We have cleaned it, but still loud. Very disappointed. My wife wants to toss the whole thing in the trash.

More fun than cost effective
Having gone through two herb seed kits, I have had mixed results. For my first kit, the basil really thrived and provided me with far more leaves than I could possibly use, and the dill also did well. Unfortunately, the cilantro never sprouted, the mint provided enough harvest for maybe a few mojitos before it died, and the chives were just barely alive. I had better luck with the second herb kit: both types of basil and dill did very well again, and the mint was at least respectable. The cilantro sprouted this time and provided enough leaves for a bit of salsa, but results were still underwhelming. Once again, the chives again were disappointing and barely did anything beyond surviving. I do enjoy watching the plants grow, but the operating costs alone ($20 that seed kits costs plus a few dollars per month on electricity that the bulbs use) are probably far more than it would have cost me to buy these herbs from the grocery store. Still, I'm just not inclined to go and build my own hydroponics garden, and I do plan on using the aerogarden in one way or another until it falls apart. It only kind of works as advertised, but it is an interesting introduction to hydroponics, and I can't imagine making this product any easier to use.

Update: I tried the salad greens kit and would not recommend it. The lettuce plants grow quite well, but I find the leaves to be limp and flavorless.

Aerogarden great, tomato seed kit not
We are at week 16 and still no tomatoes after following instructions to a T. Get the herbs. They last and are easy to maintain.

Don't bother
Don't bother spending the money. Re-use the pods you already have. I've picked up Rapid Rooters and Dyna-Gro 7-9-5 plant food from a hydroponics store, and I've had no problems growing two batches of lettuce and herbs from my own seeds.

Room for quality improvement
I love the concept. Living in New York apartment, it's great to be able to grow your own herbs. We use them for cooking and aromas are great. However in my first kit chives never came up. I spoke to customer support and they made me wait a few weeks before they have sent the chives replacement, but by the time it was too late, as all the other plants were huge, so the new seeds didn't really have a chance. I have planted my second kit a few weeks ago, and this time sage didn't sprout. Chives are also looking weak, dominated by huge basil and sorrel. Obviously, I am quite annoyed with dead seeds in both kits.