@CanucksTraveller is perhaps the man to ask; IIRC he has a TdF 10 and rates it highly. The 30 will differ in terms of material spec (Genesis' own steel on the 10, Reynolds 725 on the 20 and 30) and accessories fitted as standard.
They look like very nice bikes and FWIW I'm generally very happy with my CdF 30, although obviously there are differences between models. I believe they now come with a lifetime warranty on the frame.
They do break from tradition somewhat with the use of (cable) disk brakes and STI shifters; which you may or may not consider of benefit. I'm a proper STI tart, however have really come to appreciate the bar end shifters on my Fuji - which do bring benefits in terms of simplicity, cost and arguably reliability..
I thought you were looking at alternative tourers - Spa maybe..?