As ever, the complete series releases of Thomas are great value. Series 12 is a nice mixture of old-fashioned live action model trains, mixed with some computer animation (trains' faces, for example) and - most importantly - this is the last series where the regular narrator supplied all the voices. So grown-up fans of the 'old' Thomas will still have plenty to enjoy. Personally, I don't plan to buy any later Thomas on DVD, but with 12 series to fall back on, our family certainly has plenty to choose from.
My toddler's favourite in Series 12 is "Tram Trouble" where we meet Flora the steam tram.
These complete series DVDs do have 2 small drawbacks:
1/ if you don't want to push "play all" and subject your child to a whole lot of TV in one hit, then you have to trawl through slightly annoying, slow menus to find the episode you want.
2/ for the technology-conscious adult viewer, the bit rate (ie. picture quality) is fairly low because a lot has been squeezed onto a single DVD. This makes the picture a little grainy if viewed on a larger TV. (The bit-rate is generally a little higher on the Thomas highlights discs, which contain just a few episodes, but they are not such good value for money.) Do the kids notice this? - absolutely not.