The white T you linked certainly does look like its worth a good poke round and if it's as good as the ad makes out, it should represent good value at that price due to the work carried out on the clutch, sils and engine.
Like yourself I'm handy with the spanners (I'm an engineer so I like to play), but compared to all the other cars and especially the VW's I've owned, which are normally very simple, these are far from simple cars to work on and represent a good challenge! Nothing is too difficult, they are just very well engineered as a sports car so maintenance was a secondary consideration during their design IMO so even quite simple tasks can take a long time to carry out. I'm specifically talking about my experience with my Turbo and people make take a different view for the nasp cars, but having poked around a few s2's and 968's during my search they looked almost as complicated and instead of a turbo stuffed up the near side you have an extra cam and the drive chain gubbins to worry about...
Will it be a fun weekend car or a daily? If the former do yourself a favour and buy a Turbo as they're very rewarding to drive and are more exciting IMO. Plus if you buy the right one you get the added benefit of an LSD which makes all the difference if you're an 'enthusiastic' driver.
I've owned quite a few performance cars in my 12 years of driving, but so far my 944 is proving to be the most impressive and fun car I've owned. Metering out the boost exiting tight corners on track, with just a dab of 'oppo will be sure to put a big grin on yer face!
I'm sure there will be others with more experience of both cars on here that may take an alternative view though, but in reality you probably won't be disappointed with either
