D2C and Argon questions

Hey guys ive finally been able to get a wii. However I wanted to modchip it. There is a problem though. My Wii has a D2C chipset. There are two chips in the market right now for this chipset. The argon and the D2Ckey. I dont know which one to pick. The argon is updatable but you need a programmer (which i do not have). Yet I have heard that the D2Ckey has better compatibility. The only problem with the D2Ckey is that it cannot be upgraded.

So I have a couple of questions.

1. Should i get Argon or D2ckey which one is better?

2. Being unable to upgrade the D2Ckey. Is that bad? In the long run would that mean that newer games wont work. How does this issue affect the usability of the wii?

3. Are there any places in the UK that offer modchipping services? because I dont have much skill soldering. i am willing to have a go but 29 wires is just to much. perhaps the flexpcb but i havent heard much about that.

Thank you for taking your time to asnwer these questions. but i have been searching and got tired because i couldnt find streight answers.

P.S. My serial starts with LEH1651XXXXX that is a D2Cchipset right?