now i will put my 2 pence worth in, since i am a welder by trade
now the cheep ebay ones all look good etc, but some times arent as good as you think, and if you look at the arc with out any dark lense you can permantly dammage your eye.
when i started i had a cheep ish one at about £40 and tbh it was all good etc, but lasted about 2 years.
if you can streatch to about £100 i would, as you will get alot better kit. and i am cuttently using a welding mask that is about £700 wile i am working.
and this place is allways a good look for welding stuff
http://www.ukwelder.com/ as i have ordered a few bits off there
and here is the welding mask section, off as well i would order a few clear lenses for them.
http://www.ukwelder.com/shop2/shop_index.php?page=welding_helmet_menu