Which is the best Polar Heart Rate Monitor (incl pics/link)

[tonylikeBody-B]

The link below has so many heart rate monitors and I am now pretty confused to which one to get. I will be using it for running & cycling and also possibly for other CV work including punch and kick bag work. (I do Martial arts but wont be using it whilst doing this).

http://www.polarusa.com/us-en/products

I went to Argos store today and they have a Polar FT2 for £50 (link below) but...
1) Is there anything better for similar or a little more money?

http://www.argos.co.uk/static/Produc...7C14418382.htm

2) I'm not sure if it comes with a strap but have been told that the strap ones are better. Is this true?
3) I did not see this model on the polar site so is this model outdated?
4) How suited are these watches for Weight training.
5) Can I save the data onto my computer
6) Can I get continual readings
7) Do I need a calorie expenditure function?

Cheers,