I'm feeling much more apathetic about Series 2 after trying to get the ones I wanted in Series 1. Even with the (wonderful) guides, it took forever to figure out which packs I needed. They can't be bought online. When I finally found 5-packs and singles in-store, I had to keep checking and re-checking the guides to make sure I was getting the right ones. I've still never seen an 8-pack in a store, so I'm still missing ones I wanted.
And here again, it looks like the 8 or so BotBots that I'd want from S2 are spread across, like, 4 different packs plus singles. These are super fun, but just too much work to buy.