Nexus One hardware sounds pretty similar to leaked SS specs (from Sprint website) ..
- Display: 3.7" AMOLED 480x800 WVGA display
- Thinness: 11.5mm; Weight: 130g
- Processor/Speed: Qualcomm Snapdragon(TM) 3G QSD8250 chipset, delivering speeds up to 1GHz
- Camera: 5 megapixel auto focus with flash and geo tagging
- Onboard memory: 512MB Flash, 512MB RAM
- Expandable memory: 4GB removable SD Card (expandable to 32GB)
- Noise Suppression: Dynamic noise suppression from Audience, Inc.
- Ports: 3.5mm stereo headphone jack with four contacts for inline voice and remote control
- Battery: Removable 1400 mAh
I guess it comes down to if you want a 3.7" AMOLED screen, or a 4.3" OLED screen. They're both extremely thin phones, but I imagine the SS will be a bit wider, like the HD2 vs the current N1. But that depends how much Sprint redesigns their versions...