I've been looking at getting a new car in the new year and will probably go the PCP route (I've heard the arguments for and against this but I think it's the best option for me).

Of course I'm sticking with the Fiesta but wondering which model to go for.  Vignale - from what I've read online and what others have said to me is that it's not worth the extra cost.  I was suggested the Titanium X and that seems a reasonable suggestion - what are people's thoughts on this and what other models I could/should look at?

Commuting to work is the main thing I'll be using it for as well as occasional/fairly frequent motorway driving.

Ford change specifications almost daily. 2017' s Titanium is high in the scale but low in 2020's so be careful. The smaller wheeled cars ride better and if you are over 40 your ears will not tell the difference that the "B&O", actually Samsung, upgrade brings.

Yes, as Tom suggests, it's a matter of deciding what features are important to you and looking very carefully at the price list/ordering guide (downloadable from the Ford website) to see which models are best fit.

Some models have lost spec recently (Titanium no longer has automatic air-con, and Vignale has lost the pan roof as standard, for example). 

Can't really be guided by what others think (unless you have specific questions) imho. Vignale is not my cup of tea for instance, but that's no reason not to have one if the features appeal to you.

At the other end of the scale, you may find the Trend (pretty decently equipped and available with 95 or 125ps ecoboosts when I last looked) quite adequate for your purposes. 

And of course, if you're looking at PCP your decision could be influenced by what deals are on offer.