@EddScott if your not a badge snob then maybe give an Alpine A110S a try, check the boots are large enough for your needs but just if your thinking 4.0 GTS or GT4, considering a lightly used A110S is 50k you'd be saving money and get to keep the WRX alongside maybe.
For me I'd summarise:
A110S - Similar to PDK but better in AUTO, does not try to hit 7th as quick (particular in sport), on paddles nearly as good as PDK, responsive enough. Far lighter in weight (1100kg) so far more eager to turn in, make sure you test drive a car on Cup 2 ideally and overall great handling, awesome on track and very cheap to track, put XP8 pads in and high temp brake fluid and the brakes are fine on track with no negatives on road. 40mpg, £500 to service and warranty, maybe one to try if the boots are big enough. 300PS, 4.2s to 60 not too far off GT4 pace from been on drives out with my mates 718 GT4 PDK and on track, the GT4 does edge it at higher speeds. Give one a try you may like it.
GT4 - Its a GT4 so you get the whole I own a Porsche and its a GT4, maybe a good feeling, much bigger boots, better soundtrack been an NA 4.0, is a bit quicker, carbon ceramics are nice but steels have more feel and modulation, also much cheaper to replace. 718 PDK 75-90kl depending on spec, a little more expensive to run but not outrageous, relatively comfortable, PDK is a must for me in GT4 as the manual does my head in with long gearing.
GTS - If the manual has shorter gearing maybe an option, just for me always felt they looked a bit too plain, I do love the looks of GT4 with wing etc, why our A110S has aero kit, but GTS is a very rounded car, works great on road and pretty well on track.
991.1/2 GTS - Is a great recommendation, from memory gearing is shorter in PDK and they are such a great rounded car, big frunk, back seats too. Options are important though as there are lots of stuff that impacts the drive like sport chassis, the fancy diff's and fancy ARB's cannot remember the Porsche names but there is a few options that are a must for a drivers car, Aerokit is cool addition too. I'd go 991.1 for the NA engine!
991.1 GT3 - Fabulous cars, can be had from 80k privately, G-series motor important, but do some reading up as I think Porsche extended the goodwill period from 10 years upto 15 years, you can also continue to add extended warranty beyond this I believe, so as long as you keep it under warranty, the engine is covered if out the goodwill periods. The 991.1 GT3 has the best motor of all the above, it makes the car, GT4 rides a little better and has an extra boot but GT3 has loads of space behind seats, they drive just fine on the road and the PDK is not too leggy and are absolute beast on track. If there is warranty and you can get one for around 80k I'd give it serious consideration because a well purchased 991.1 GT3 I cannot see values dropping sub 70-75k in honesty apart from leggy high mileage examples. Whereas I do see 718 GT4's dropping into the 55-60k region in another year or two and GTS cars will drop more potentially.