OK...we have the Minnie 2201DS and we've had it since the fall of 2013 and have put a lot of miles on it. It's a great little trailer. Best features include so much storage in bathroom, outdoor kitchen and so far, overall reliability. We haven't had any major issues. We did replace the seat cushion foam as the original foam wasn't very good for sitting too long. I added a power vent over the bed, and just replaced the bathroom fan with a better one.
But...I've looked online at the Grand Design 2150 and if we had seen it when we were looking, it would have been a contender. I like the sofa type dinette with portable table, larger tanks, heated underbelly. If in looking at them, you can see that the quality is better than the Keystone or Forest River, I would go with it.
If your TV can handle more weight, I would also suggest looking at 4 season trailers from Nash/Arctic Fox or Lance, especially if you want to do any colder weather camping.
Another factor to consider is the dealer as you want to be able to get good and timely service for any issues while under warranty.
Finally, make sure you know the towing capacity of your truck and the limitations of the payload. It's best to really crunch the numbers, but I also subscribe to the idea that you only want to tow 75-80% of the maximum weight capacity. For easy towing, and it looks like you want to do quite a bit of traveling, you don't want to be pushing the limit.
