I'm a sit on the fence on these! After manageing 3 kids just fine without one, I really fancied one this time.
We actually had it in the utility stored until Devon was about 3 months old so didn't use t to start with, as had no bedroom/nursery in the end for him. We used a changing mat on our high chest of drawers in the bedroom and a basket of the bum stuff on the top. Then downstairs we had a mat that we used to slide under the long coffee table to store and you didn't have it lying about then. We now found a place for the changing table in the lounge, (gift from my sister , her old one, lovely one tho), mainly because I need to keep it till my best mate falls pregnant. We have no room in the bedroom to store all the stuff on, so we use it to fill with everything that won't fit upstairs..
In hindsight, yes I would get one again, and yes handy after a section, saves your back, although if you have other kids, mat on the floor is good , saving you standing there watching for safety
Try not to buy full price, ebay has some lovely ones