I'm not aware of 1abc, however it is common place for large liquidators to have multiple trading entities. TDW themselves have been around quite some time, and with most liquidation purchases, you'll always get some happy and some extremely unhappy customers.
People can be unhappy for a range of reasons, everything from not really understanding what it was they were ordering in the first place, broken items in the load (very common) right through to just dealing with a bad supplier.
Research is king when looking at buying from liquidators. You can't ever ask enough questions of them and if they are a good supplier, they won't hesitate to tell you not only what you ask, but also what they think you need to know.
I would suggest looking at BBB for the latest rating on TDW or this sister company, but if you want a recommendation of a supplier, I would say viatrading out of Califiornia.