I agree with Tober. Sideswipe's bot mode doesn't look as impressive as I'd hoped for. The Lamborghini bonnet looks oversized as his chest and his shins look too bulky.
Size-wise I'm not sure if I should be glad that he is smaller and hence in scale with Optimus, Rodimus and Grimlock or whether I should be disappointed that he looks like he'll only be as big as a Binaltech.
The only thing that will really excite me from the masterpiece line now is if they make either Shockwave, Galvatron or Megatron. And even then i'll only be happy if they're sized the same as MP-10.