This is the best I think. Reason being, it has your keyword in it, it is short and memorable, plus you have a .co.uk domain.
This would be second best for me, only reason why it is second is because, it is slightly longer than myporch (longer the name = the more spelling mistakes)
I wouldn't recommend using numbers in domains, it looks unprofessional and quite nasty (fair enough phones4u got away with it).
iporch sounds like a rip-off ipod. Because of the simple
i at the front, it makes it look like media technology.
As someone said earlier in the thread, he thought you meant the car manufacturer,
porche. You have to be careful what your domain looks like. (whorepresents can look like a law firm, or something else)
Stay away from .info domains if you are selling products. You are not a informative website, you are a
commercial website.
In conclusion, myporch.co.uk is the best, but try and get .com, .net domains too. You don't really want someone to
piggyback you.
Thanks, Darren