The basic deal with the Queen B: it follows the higher end European stroller design concepts (which assumes you're not lifting your stroller in and out of your car multple times on a daily basis). Thus, the Queen B is sturdy, luxurious, and HEAVY (over 36 lbs with the toddler seat attached). If you're looking for a travel/lightweight/mall/running errands stroller, look elsewhere.
Also, the wheels are fixed on the stroller, which some parents have complained about (although it's all part of the "classical pram" look). You can check out this link for all the various images on the Queen B:
Queen B.
Because of our 20-review minimum, I can't officially recommend this stroller, but depending on your individual stroller needs, this is definitely a winner (if you don't mind the weight and the wheels).
Hope this helps a bit.