Dunlop's are going to be expensive, yes they are very good. During this tyre change, you can do two now and two next month. Just have the tyre place rotate the wheels with the most grip left on the back wheels and replace the front two. Next month replace the rears and have the tyre place swap them again, new on front, previous on back.
For tyre brands, Falcon is a very good alternative brand to the more expensive like Dunlop, Michelin, etc.
I ran the Falcon Sports Tyres (Semi-Soft Compounds) on my GTI for some time, and they were great, good in dry weather and even better in the wet.
Edit: You should also rotate your tyres, this way you get more mileage out of them. Most cars on the road are FF (Front-Wheel Drive) this means the front tyres have to deal with steering and drive, causing a higher degradation on the front tyres than on the back, thus we rotate the tyres.