I'm not the best person to answer re servicing costs but bear in mind that you will likely get better fuel consumption with a K-engined car than a Toyota. Perhaps if you could offer a few thoughts on how you intend to use the car, budget, what you want out of it then we can help with some specifics.
Re daily use, well everyone will have a different take on this. I used my Elise 111R every day for about 3 months and loved the driving experience but soon tired of the grind. My major considerations were:
- Poor visibility
- Reluctance to park it anywhere around the general public
- Looking like that idiot in the sportscar with the gay moustache
- Feeling like I was wasting it by using it in traffic/on motorway
However, the car was perfectly capable of completing every journey without incident, I just felt more comfortable keeping it for fun so I bought an old Clio for £100 and went to work in that instead, still clocking up 9k miles a year fun time in the Elise. I'm sure other members can offer their perspectives on the above as well.