I am doing a Quasi Draugr Deathlord costume for Halloween.  This actually is the first piece of armor I have purchased so my experience with medieval armor is zero.

PROS:
It's heavy duty and quite well made.  It will work perfect for my costume. It looks good and finding something with horns that wasn't awful expensive was not easy.

Cons:
No interior padding or lining, it's all metal.  The horns are bolt on, but with only one bolt they are easy to turn and twist.  The horns are cut off square and the helmet is rounded, so there are gaps in between the helmet and horns, not awful but they are pretty obvious.  These issues are easy enough to fix.  I used gorilla glue and cut up a knee padding insert to pad the interior.  I will drill a hole into the horn, glue a metal dowel in, and then drill an adjacent hole on the helmet to lock the horns in place when they a bolted snug.  I replaced the flat head bolts with 10mm bolts so I can torque the horns down.  For the price these are very minor issues.  I would have given 4.5 stars, not 5 but it was close to perfect for me.