there must be more!! the 170 isn't that common but they are a few, also speak to your local dealer... they have access to ex seat managment cars, (same as exdemo cars...) if your dealer is good they will be able to get in there early and get your a bargin, our ST 170 sport tech in candy white had 7k on the clock, was 3 months old and cost us £18600... the same cars on dealer forcourts (again exdemo or ex fleet) where £20k+
(theres a difference between ex mangment fleet and ex dealer demo... either way they can't sell them before 3 months otherwise they have to pay the vat on them...
if its a dealer demo they have to buy that car from seat, then run it and then when they sell it they have to add on the cost of depreciation, running etc to the price of it, some dealers are greedier than others and charge top dollar as they know the cars are in demand, others price them better to shift them... demos can some times have a hard life, we looked at one that was used as a demo / dealer pool car so had a few marks and broken trim.. but they still wanted £19k!... however the same dealer got me the same spec car from managment for £18300 and made only £300 profit on it in a hope to keep my business for servicing etc..
some ex demo cars will actually be ex managment fleet, as normally once fleet are done with them they go to an internal auction, where dealers have to bid on them, and then add their profit on top which takes them back up to £20k mark..)
The one with the sunroof sounds good, its one option I wish we had! personally I would prefer the RNSE system as it looks better and give directions in the speedo, but its personal choice as the nav is easier to use on the pioneer