有咩機可以做到接近單鏡機的級數,質素, 又可以出得街?

I think you worry about the rather than <質素> ???

if you concern about 質素, I think 單鏡機 is only one choice... if you still only want NOT DSLR, Canon G9 is only one way you can think. It was because, only this DC can take for RAW format, and you can change some color tone later. And this is one of the benfit. And also, you can spend some money for external flash night, being when you step into DSLR for your next step, being you already spend $$ for Canon, you can still use this accessory later on... PLEASE think... G9 also ask for more than $4,000 ... when not thinking about 400D ?

又可以出得街 ??? This is so funny... any kind of digital also can do that... it depend on you want to take bit heavy gear to take nice photos or just for shot around....