Clarke Welders, which one?

[cirrusjock]

Hi

I have decided to learn welding and have a go at building the chassis myself. I am going to buy a welder this weekend and have decided to go to machine mart and get a clarke one as well as a few other bits.

There are a few Clarke Welders around a similar price and im not sure of the differences. Which one would be best for learning and building the chassis?

Clarke 151TE
150TE
151EN
160EN

Anyone know the main differences as the seem to cost more or less the same?