M.G.
Hi R., Congrats! I have worked (and still do) as a nanny for the past 6 years and I have my own daughter who is now 22 months... I have worked with just about everything. First car seats. I would highly reccommend the infant carrier for the first year (or til your baby grows out of it). It is extremely convient if he/she falls asleep and if you are going shopping they attach to most store carts. But as far as brands go, I would recommend Britax. They are very pricey, but they are the best out there. They are European made and tested and their testing is better than ours. It is tested at 65MPH impact. US only tests to 25-30 MPH impact.
As for feeding. Anythign but Dr. Browns good is good. They are a pain to clean and put back together. Its not hard, just extra steps you don't need to have when you are trying to feed a hungry baby.
Strollers.... I have used them all and they are all pretty much the same. We have a Graco one and it collapses with one hand but I think they all do. And the basket is pretty big too. And if you use the infant carrier they attach to certain strollers... (we used a Graco infant carrier and stroller combo.)
I never really used my pack n play unless we travelled. My daughter was pretty content with her seats and to just lay on the floor. But they can come in handy. The first family I used to work for had a 15 mo. girl and twin infant boys so we used one for a changing station on the main floor instead of having to run upstairs all the time and leaving her alone. The vibrating seat is a good thing too. They are about $30 but they can calm a baby down.
And Dreft.... is a hoax (got this from my Ped).. You dont need it. Try washing one outfit in whatever you use as laundry detergent and if there is no rash, you can use ANYTHING that is dye and fragrance free. Alot of parents use ALL free and clear. I have used Tide in all sorts of scents on my daughter from day one. She has exzema and it is NOT affected by using soap. (believe it or not, Johnson and Johnson lotion was the culprit!) I can highly recommend Aveeno prodcuts too... Its the only lotion that keeps her exzema in check all the time. But don't waste your money on a thing of Dreft. Anyway, hope it helped! And good luck! Keep in mind though, that everyone is going to have thier opinion and what works for some of us might not work well with your child. Have a great day!