I've been using the B-Safe Ultra infant car seat for about 3 weeks now, and overall, I'm pretty happy with it! The car seat is SUPER cushiony. The infant car seat that I used with my now 2.5 yr old seems like it must have been so uncomfortable after using this car seat. I love the extra cushions around his head - no more head falling over to the side. I have a 6 week old baby, who is growing SO FAST, and one feature that I loved was how you can adjust the height of the harness straps so easily. I literally did it one handed while I held my son in my other hand! No more re-threading the straps through! The only thing that is a bit more difficult with the car sear is actually getting my son buckled in... it seems like with all the extra cushions and padding, it can be hard to get him in there just right, and the actual buckles always fall down to the side and it's hard to find them. But, not a huge problem, it just takes a few extra seconds to get my son safely buckled. It was super easy to install the base - only took about two minutes, and it is super secure, no moving that thing! One feature that I love, that I haven't been able to test yet, is strapping the seat in without the base. 95% of the time, my car is used for all family travel, but on occasion we will use the hubby's (if it isn't full of his tools and equipment for work!). It seems so simple to install without the base. If I was a city dweller without a car and relied on uber/lyft/cabs frequently, this would be an ideal car seat for me! One negative is that this car seat is heavy! I guess that is just one of the downsides to infant car seats in general - bulky, heavy, and awkward to carry around. I'm also slightly disappointed that I can't connect this car seat in my B-Agile double stroller. It would be great if all the Britax products were compatible. I received this product from the weeSpring Parent Panel.