i have a lightly modded G35C for daily tasks. if you can, keep the beater for your daily needs. for me, it's not worth getting dings and crap while at the stores and such. it also snows where i live and that means road is filthy with salt. car can handle it, but i dont like getting my toy car dirty. also i have 2 kids so i need the rear seats.
i dont even use my G on the weekends to go to the stores. i use my honda fit for that since i care about my G too...