The Mk.XIV was the first 'full production' Griffon - engined Spitfire to see service in WW2, following the 'short-run' Mk.XII, and saw service countering the V1, as well as a fighter capable of taking on anything the Luftwaffe had around.
Next to the Mk.IX, it's possibly the most important later war Spitfire built, and only two companies have released kits in 1/48th scale so far, both inaccurate, although one of these, from Hobbycraft (now OOP), is slightly better overall. The other, in two versions from Academy (high back and low back) are visually inaccurate, and very much so.
I have a Hobbycraft version, which I'm in the process of 're-converting' back to a Mk.XIV, having converted it to a PR.19, and another HC kit yet to build, but it's about time a mainline manufacturer released a good, accurate kit of this important, and very powerful-looking fighter, and Airfix, having already released kits of the majority of major Marques of Spitfire and Seafire, including a very nice PR.19 which is basically the same airframe, would, I think, be favourite in the running.
As for 'special', maybe it's that long, aggressively attractive nose with the big, five blade prop, which I think is equal in 'visual appeal' to the clean lines of the Mk.1, and the streamlined symmetry of the Mk.IX.