They look identical to most others out there. I wouldnt hesitate buying one if the price is right.
Maybe look at the construction of them over real good, and compare it to other brands.
See what they weigh, because this can also give you a decent idea. (48" = 312lbs)
I just bought the LandPride BB1248 ($700 OTD). It weighs 316lbs.
Get a BB that's just over the width of your rear tires. The BB1560 (60" wide) works absolutely great on my B2650, which has a 54" rear tire width. Also weighs 428 lbs, and is a great counterbalance weight for the loader/pallet forks - hoisting max weight on loader (relief valve opening) keeps the rear wheels solid on the ground.