The watercooled (goblin teasmade) is more powerful as standard, and is fine as long as you maintain the cooling system and bleed it weekly. I've never had an aircooled (hairdryer), but I believe they are a little more reliable. Saying that, if you were looking for a reliable car you would buy a new KIA

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Ask if you're not sure about anything and can't find it on the forum.
I am 25 miles north of you in Norfolk, hope to see you about in your 126 when you get one.
Marc