Thinking of buying an arc welder, it need to be very portable and as light as possible. I have been looking at the Kemppi evo 150 and have heard good reports, but its expensive at just over £400. Also on the cheaper side at about the £200 mark the Thermal arc 175se, very small and compact but will it do the business? The last one is from a company called Green3k ltd, but that may be there old name but the local welding supplier recomended them but I have never heard of them? Any other suggestions welcome! Thanks Mick