Huge mistake to not go with a tray. Better hope it has a manual eject or jammed discs will be their new rrod. Was a HUGE problem with iMacs back when I worked at the campus IT labs.
I used to think the same thing but the Wii and PS3 are both slot load and I haven't had any problems *knock on wood.
same, i understand the concerns with slot load but i've never seen any problems either