depends if your just wanting a bar for protection consider a smart bar made from pvc plastic had one on the Nissan 2.8 tdi 1998 ranked as safest bar for humans as bar due to its material and yes they are as good as steel or alum bar for protection and same price bracket.
if your mounting a winch then bar should be steel
bar design and shape should not reduce your entry and departure angle so stay away from those huge cattle scoop bars
but if your city dweller and travel in convoy for your 4wd and someone got a tirfor or snatchum strap why bother having a bar at all, save money and weight and put in a difflock if you want off road capability or get better quality tyres.

