i have used galaxy 3 for one year and now am using dell xcd35 for past one month.
i would say to go with dell eyes closed.the larger screen and resolution just enhances your experiences infinite times.Now i can't even look at my galaxy 3, it feels so low reso(totally piss poor).
few plus of samsung are better audio quality and better touch
but i would say i can live with that for the fact that now i can comfortably use the world newspaper app,google maps seems so much better,gaming is a step ahead and looks ain't that bad.
go with dell xcd 35 from my side