On Saturday (here in Australia, it's Monday afternoon already) - I went to my local dedicated photography store, and tried the 100D (SL1), 700D and EOS M (The store only had the SL1 for 1 week). I was impressed with how small and light the 100D was, as a body - though it had the 18-55mm IS STM lens attached, which looked 'quite big' relatively speaking.
I wrote in the "Future of the EOS M" thread about my experiences with the EOS M (summary: it has a small size with the 22mm f/2.8 lens attached, but AF is too slow for me). The EOS M with 22mm lens can easily be put into a small bag (or into a large pocket) Build quality and weight spoke of quite decent materials being used.
Thanks Marsu42 and verysimplejason for your comments / reflections on my earlier post on this thread about the SL1 / 100D. Some further thoughts of mine follow....
The 100D though felt too big to use in that way (definitely not pocketable, even with the 40mm STM pancake). Actually after I had used the 100D for several minutes and saying I liked what Canon had done, but I wasn't sure the size was right (for my girlfriend). The female salesperson told me that she felt the grip wasn't to her comfort- as her hand felt too cramped and 'naturally' felt she needed to hold it more steady with 2 hands.
We then used / compared a 700D - which I had not seen in person or used before, and I much preferred that size. As my girlfriends hands are almost the same size as mine, ergonomics are very personal. As I said to the salesperson, it's probably wisest for me to take my girlfriend to the store to look before actually buying the any camera for her.
The AF on both the 100D and 700D was really quite ok: relatively fast and definitely smooth! I used the 18-55mm IS STM lens on both camera bodies, and it felt more balanced on the 700D. I'm hard pressed to tell any difference in speed, but AF seemed similar on both. I like STM! (I guess as a budget option to USM in some cases). In the fairly well lit store, the AF wasn't as quick as my 7D using a lens with USM - but it was decent
The 100D was exactly $100 (AUD) less than the 700D, which I thought... hmmm for $100 the 700D does give you more - eg functions, etc. The 100D's view finder was quite decent size and bright, ok not as large / bright as my 7D, but better than my 350D. I asked about the 18-135mm STM lens, wow, that lens is still quite expensive here in Aus. So in summary, I think the 700D (or even the 650D - which will be getting cheaper) are better options for my girlfriend... than the 100D / SL1. Who knows when I should purchase it (her birthday is November...!)