I used to think Milemarker was alright.
...but I was wrong.
What soured me was the service on a E8000 winch I bought.
About 3 years into the "lifetime warranty" <yah, the first ones off the line had a lifetime warranty> I got crossed up on a pull, and all the line bunched on one side and broke one of the side frames. My bad.
I wrote the company and tried to get a part, which I would have paid for. 3 weeks, and many dodges later, they sent me a used part, for a different winch.
The problem is that Milemarker e series winches are the same exact winches that you get a Harbour Freight, and winches are made in China.
Not a bad winch overall, but a tad on the sloooowwwwww side, and replacement parts appear to be hard to come by. It will recover your vehicle.
If you are looking at the Milemarker, consider that the extra cost is for the warranty; then go buy the sane winch on-sale at HF, then buy the exchange warranty. You will be money ahead and not have the headaches of working with a company that can not support what it sells.
I am looking into getting synthetic line also. The Milemarker/HF winches came with 3/8" line, which is overkill for a 8000lb winch and tends to be hard to handle.
My friends who own a Warn 9500i just love them! Good speed, and they seem to know when to up the RPMs for line recovery. Also, they use a much lighter line.
Ron