Winch for gu patrol

The 'rating' is generally a load of bollocks when you look at the actual figures.

The people that sold you the winch and the bar will happily sell you a snatch block or two, so all of a sudden you can double the pulling ability and exceed the stated rating.

The stated pulling capacities of a popular winch are [lb(kg)]:
1st wrap: 9500 (4310) v 12,000 (5450)
2nd wrap: 8190 (3720) v 9800 (4450)
3rd wrap: 7060 (3200) v 8300 (3770)
4th wrap: 6080 (2760) v 7200 (3270)

This capacity is about the point that the winch stalls out. Its a rare recovery when you are down to the 1st wrap of cable on the drum and then you run the risk of the drum spinning and the cable tearing lose, so going max power in that situation is not recommended.
2 wraps of cable on a 12000lb winch and you're pretty much in the margin of error for the rating of the bar.

Most of them have the same motor, just different gearing, so the higher rated winch is slower but they both have the same footprint and fit the same bolt pattern.

Advantage is that you can get a bit more pulling power, but its slower, but not as slow as reaching for a snatch block and the extension straps that may also be required for the smaller winch.

Still, a much better option than a Tirfor.

Don't take this the wrong way but your friend who knows his stuff what did he base his decision on when he advised you on what winch is best, was that based on price cheap inexpensive to replace if it dosn't last very long or quality long life proven and tested product you did ask which one is the best in your first post. Warn may not be the best but they would be far superior. Supercheap winches have a 50 second duty cycle followed by a 5 minute rest period which is a long time when trying to winch out of a dangerous situation. You don't have to follow their recommendations but risk damaging the winch and it failing when you need it most. Even if you go 30sec on 30sec off it won't extend the winching time by much.

The equivalent Warn winch has a high temp protection switch that forces air into the motor when it gets to 176c for cooling and longer operational times It can be manually operated as well.https://www.clemson4wheel.com/warn-73010-endurance-12-0-ultimate-performance-series-winch.html

My old Warn XD9,000lb is 20yrs old and still working fine and has always been reliable. Good luck with your choice I hope it last and don't forget to give it a run at home before you go bush to make sure it's working most of us do that.