Ian,
the original spec for the Scorpion was 1.5"
Now you can have a Scorpion with 2" which Ibelieve increases performance a lot.
Dont know if 2" is the standard or not but you can have 1.5" still.
But dont a lot of the guys reduce down to 1.5" for the last 10'-15' ?
Re your other point, agree its a lot of money then you find you don't like (interesting more then a few have ordered this "new" wand from America shown on here a few days ago - hope they are not disappointed).
Matt at Cleansmart, Nottingham, allows you to try for a week and return if not happy. Have a go.
Steve, thats a lot of kit - I assume you put a truck mount version together, but even its still got portable versatility.
Prices for a good base machine portable.
Base machine is £2350 +vat
Wonderwand £420 + vat
50' hose set say £250 + vat
Total £3020 + vat
Still a lot of money - but ar'nt they all too much.