Four babies! Wow girl! I have twins, can't imagine adding two more to that! What fun, you must be so excited!
I don't have a specific brand to recommend but I have a friend who had a double Peg and really did not care for it. I had a Safety First and it was great when the babies were still little. It was a tandem stroller, we graduated to a side by side when they got bigger (about 18 months old) because the tandem was getting hard to push with that much weight out in front. But, I would not want a side by side when they are little, too much hassle with door ways and narrow places.
The Albuquerque Mothers of Twins Club (which you need to join before you have your babies if you live around ABQ) is having our semi-annual garage sale this weekend. It is Saturday morning at 7am at the Montgomery Church of Christ on Montgomery near Louisianna (will be signs) You could come to that and see if there are any good used ones you are interested in. A lot of times there are some really nice, used travel systems. If you wanted to join the club before that (I know I know) you could shop Friday night before it opens to the public. Email me privately if you are interested in that info: ____@____.com
Congrats!! If my twins are half the fun as your four will be then you are going to have so much fun! What a blessing!
M.