I use my slow cooker about once a week, but agree on the issues with texture on meats. It's not bad if you're going for pulled pork or chicken, or something similar where your goal is to have falling-apart meat. I absolutely HATE foods with bones and/or skin cooked in a slow cooker--this may be a personal issue. I love my baked beans from it. I could make chili in it, but usually just simmer it on the stove versus dirtying another pot. I'm home all day, anyway, so it's not a problem.
I agree, most things made in a crock pot/slow cooker taste the same, have a similar texture and how many times can you have beef stew each week? Around the holiday season there are always a few new cooking gadgets. I am old enough to remember when the microwave oven was advertised as a complete replacement for your standard oven........think most would now agree that it isn't and is best for reheating certain foods, making popcorn or things made in boiling water. Certainly not a replacement for the standard oven.
Probably best to look at what/how you cook to determine if any of the latest cooking appliances will be of benefit to you or simply an item you use a few times then get pushed to the back of your cupboard.