Wow, I just noticed that three of these are Theo-focused. I think it's nice that Theo's getting some more episodes directed at his experiences.
The Gift. A younger sibling giving you something you don't quite like but you know it's extremely important to them 'cause it's made outta love. One of the best parts of this episode was the flashback to the hard work Theo put into making the sweater. Theo's face when it was ruined was a little heartbreaking. Dave's responses when he first opened the gift were funny along with Theo's declaration he'd make Alvin and Simon one too. Overall, love the message of the episode.
Theo Knows Best. I like this episode again in part because of the message. Everyone was concerned with themselves when Theo found the ticket (minus Jeanette). Though Theo's too nervous to give away the earnings himself, I like the fact that he did give it away. His daydreams are quite funny as well.
Simsky. They finally created a plot based off Simon's sleep issues. I enjoyed watching Simon try to explain why they couldn't view what the cameras captured. Simon's not a great liar. And yeah! A little Brittany/Simon interaction. Dangus was ridiculous in this episode. Love the song. Definitely my favorite of these four.
Lucky Day. I was a bit surprised at the ending here as I wasn't expecting Theo to pull off such a prank, though I am a bit surprised that no one else pulled any pranks. The scene with Theo, the clover, and the butterfly was adorable. Overall, interesting to watch.