So I'm thinking of buying a new camera but the thing is, I wanted to do my homework on Amazon and it's really confusing.
I wanted to buy one with the LCD camera at the front because I want to use it at social occasions.
I've come across two models the PL150 and the ST550.
I just want a clear description of what is different because I know the PL150 is cheaper.
Here are the links to make things easier.

I also wanted to know if colour makes a difference with the pricing because there are variations with the price on the same model? (Unless if there are small differences on that too)

PL150 links
http://www.amazon.co.uk/Samsung-PL150-Digital-Camera-Optical/dp/B00361ECH2/ref=sr_1_1?ie=UTF8&s=electronics&qid=1282721330&sr =8-1
http://www.amazon.co.uk/Samsung-PL150-Digital-Camera-Optical/dp/B00361ECHW/ref=sr_1_4?ie=UTF8&s=electronics&qid=1282721330&sr =8-4
http://www.amazon.co.uk/Samsung-PL150-Digital-Camera-Optical/dp/B00361ECHM/ref=sr_1_2?ie=UTF8&s=electronics&qid=1282721330&sr =8-2

ST550 links
http://www.amazon.co.uk/Samsung-ST550-Digital-Camera-Optical/dp/B002RL8354/ref=sr_1_3?ie=UTF8&s=electronics&qid=1282721330&sr =8-3
http://www.amazon.co.uk/Samsung-ST550-Digital-Camera-Optical/dp/B002JM1GUA/ref=sr_1_5?ie=UTF8&s=electronics&qid=1282721330&sr =8-5
http://www.amazon.co.uk/Samsung-ST550-Digital-Camera-Optical/dp/B002JM1GTQ/ref=sr_1_23?ie=UTF8&s=electronics&qid=1282721408&s r=8-23
http://www.amazon.co.uk/Samsung-ST500-Digital-Camera-Optical/dp/B002JM1GVO/ref=sr_1_7?ie=UTF8&s=electronics&qid=1282721330&sr =8-7
http://www.amazon.co.uk/Samsung-ST500-Digital-Camera-Optical/dp/B002JM1GVE/ref=sr_1_16?ie=UTF8&s=electronics&qid=1282721330&s r=8-16

Thanks for your help in advance!