I really like Let's Dish; we've been doing it for years. We don't use it every night, but when we haven't planned ahead or when we can't get to the store, I like that I have an alternative to take out. It also keeps us out of a food rut. Our kids like it too and will try things from LD that I'm less confident they would have tried if I'd made it from scratch.
I did Dinner Done before once but won't do it again.
To use the meals, I had to plan ahead, pull it out and defrost at least 24 hours in advance and the cooking time for some of the entrees was as much as an hour. So I didn't feel it saved time or effort and I never went back again.
I tried Let's Dish a while back. Out of the 6 meals I made and froze, we ended up eating 4 of them. None of them were spectacular. The last 2 ended up on the trash.
There's really no magic to prepping meals-- it's all about making it ahead of time rather than scrounging around in your fridge when you are already starving. You can fix anything without having to go to Let's Dish. What makes any food "convenient" is that it's ready when you need it.
I have done it a few times and while I'm not thrilled with it, there are a few things I like about it.
It is nice having the meals in the freezer for those nights where you don't know what to cook, don't feel like cooking, or don't want to do takeout/delivery.
I don't like that they rely on a lot of convenience foods, but I do like that you have control over what goes into your food.
I usually pick recipes that can be cooked from frozen (versus ones that need to thaw in the fridge) because I am rarely organized enough to plan ahead.
The food is decent. Better than most frozen meals.
I recently tried Blue Apron. I really like it, but I love to cook. It is not cheap but the food has been really tasty and so far their customer service has been impressive. There is a lot of chopping and prepping involved but I love that I don't have to do the menu planning and shopping.
I didn't find it making dinner that much easier than just cooking something simple on my own. Some of the meals were great, most were okay, a few were not good. Overall, I didn't find it worth my time.
Blech. Boring food with subpar ingredients. I vividly remember scooping out my ingredients at their location -- things like frozen vegetables with ice crystals on them.