hey luckymum,
i've worked in nurseries for the last 8 years and am a qualified nursery nurse and if you want my honest opinon get him out of there if those things had cropped up in my mind even when i didn't have my baby i wouldn't reccommend anyone to take their children there.
signing in and out should be made an issue due to fire safety and ratios etc.... let alone keep an eye on the children
food that would bug me to especially when you say they have enough staff and that etc... and even if they didn't have a great number of staff then pasta and cheese sauce isn't exactly rocket science.
at all the nurseries i worked at feedback was one of the main things and we used to make sure the babies had a little book to take home each time which their keyworker filled in to let parents know how they got on and what they did throughout the day, also made sure at least one of us (staff) chatted to the parents even if it was just a hello or goodbye.
how old is your little one? does he settle well in new situations? only ask with regards to ideas for transistion
i'd take him to the new nursery at least once before he starts properly, even if he's a very sociable and easy going little boy just so he's introduced to new faces etc.... you know you can stay with him when he visits then maybe take him back for another visit and leave him for an hour, is he going to be leaving one nursery then going straight to the next one just thinking maybe good idea to have some time in between the two!!!
i think you have made the right decision, if i was in your shoes i would have done exactly the same i hope some of this helps anything else give me a shout,
take care and keep smiling remember at the end of the day you pay them for quality care for the most important person in your life and if you aren't happy he isn't going to be happy, so basically you are sacking them cause they are crap

xxxx