Yeah, BB-8 looks like what I expected and I'll definitely get him, but I think I might wait for a sale for him and the Star Destroyer. (thankfully I don't have much interest in any other ones, phew!)
Both look like good sets, but a little pricey (even though their $/piece ratio isn't too bad). These sets will be probably be sold EVERYWHERE, and I remember early this year my local Fred Meyer had all the Star Wars sets 20% off.
Edit: Actually on second thought, that weird smaller walker looks pretty neat, especially if the legs actually move when you push it forward. Maybe not $50 good, but another that will be perfect on sale.