Mostly good. Some bad...
I've been fooling around with a Raspberry Pi since the original Model A with just 256MiB RAM was first produced in February 2012, upgrading to the Model B (700 MHz ARM1176JZF-S single-core with ARMv6 CPU, 512MiB RAM) when it was produced.
I missed the B+ for some reason. Not through cost. These little marvels sell for under . . .