As so often the case, I guess it's a balance of grip & longevity, then maybe tyre noise. What's your ideal balance?
On my '96 2.3LPT I'm running Nokian NRH2's. Admittedly the tyres are 195x65-15s (but I like a higher tyrewall because the roads round here are awful). They're directional, very quiet, fairly grippy. Whether they'll last well I will see - only done 2K miles so far. Mine were £50 each all in. I talked to Motorvation Saab in Pembury and they fit them where possible to all their Saabs. The way they talked about them being a good match for Saabs reminded me of some previous discussion threads re. Gislaveds. I'm sure the sizes you're after are covered.
Also noted Mr Torque Steer's comments re. Toyo Proxes. My Dad has a set of 205x50-16 Proxes on his 9-3SE and they are indeed hugely sticky - I was v. impressed. Going round some corners at speed, I was flailing into the door bins! And yes, they were quiet too. Believe they cost him £60-£65 ea.
BTW, I'm sure directional tyres like the above virtually eliminate tramlining because of their treads. I used to have some Conti-Sports (205x55-16) on my previous Nissan Primera (car chosen in a weak moment, I know). Driving around Warwickshire's B-roads, the tyres would often scare the s*1t out of me. It was like the car was on tracks and the steering had a life of its own. But since using directionals, I can't actually think of a single moment when tramlining has occurred...