I did geography GCSE, and just going on to do psychology (AQA) and biology (Edexcel) A2.
They are really quite different in terms of how they are assessed, biology is more reading the content and applying it to different situations and psychology is more like regurgitating the textbook.
Your right when it comes to psychology having a ton of experiments to learn, i would say about 40 across AS from my experience, but it is just a memory game, if you can memorise them all then its just putting pen to paper and copying them out in the exam,no thought needed, thats why i found psychology easier and tends to trend in higher grades.
Biology however is without a doubt more respectable, as it is a science and up there with math, chemistry and physics....and opens alot more doors when it comes to university courses, but it depends on if you have decided what you would like to study, if so and your course doesnt require a science and your absolutely sure its what you want to do, i wouldnt put yourself through the pressure. However if your uncertain, carrying on without a science, and then changing your career choice, it will eventually limit what you can apply for.
Hope that all made sense,lol