I personally prefer the first one as it looks a little darker, armour does look dark like that in most pictures I see of re-enactors. The second one looks a little too clean/new. If the armour was the same colour it may not matter as much but even then after being con campaign for a while and most likely keeping the same set it would most definitely look darker.
Thanks
I want to ask, do you have any images of Prince Rupert's horse? Were they blue or red?
Sorry for late reply. To my knowledge they were in red. There is evidence that they ordered red uniforms at some point (I don't have the source to hand sadly). However, as the war went on you would probably see a mixture of uniforms. I expect a few more would be in soft hats as well.
Then again, this source has Prince Rupert Lifeguard (who formed a part of the regiment and were sometimes detached as a separate unit) in blue:
http://www.blews-ltb.co.uk/regimentinfo/royalistCoats.asp I know Prince Rupert himself probably wore a light blue coat with a montero hat (large white feather of course). I am a little busy tomorrow but will have a look around to see. I believe I may have left the Osprey book on the subject back at University so will have to travel over there at some point to retrieve it.
EDIT: From Osprey 'Some accounts have survived, such as that of Sir Thomas Dallison, who obtained 300 or 400 yards of red cloth to make cloaks for Prince Rupert's Horse'