Arduino mini & SSR or common relay with coil


I want to switch 230V AC with arduino mini and I fount that there are two options SSR or relay with coil , what is better ?
Is there a schematic how to connect the SSR to arduino mini , is 40mA current enough to drive a SSR?
Are those relays for AC "" or DC ?
Any suggestions what SSR or relay should I use , and i found the schematic for coil relay on playground but I want to use a MOSFET instead of a Bipolar transistor to avoid the resistor , what kind of MOS should I use?

Thanks for your time.