Hiya again guys

Just a quick Q...well not so quick....

been buying resin for a long time now...anyone who's clued up..might be able to shed bit light on it

& spent the time to help me out....please...
I buy resin of 1 supplyer cleanspot,never know wot resin it is no label on bag.....advitised as-
25L
Premium grade Virgin mixed bed DI resin £61.50 exc vatI was lookin about tonight........ and....... ,if you read this cleanspot,im still ya loyal customer...i love you...LOL....
WINTECS wot i was lookin at tonight had 3 choices resin,as follows
Virgin DOWEX Ion Exchange Resin 25L MB50 £69.00 exc vatWINTECS
Virgin PREMIUM Ion Exchange Resin 25L MB4 £64.00 exc vatWINTECS
Virgin PUROLITE Ion Exchange Resin 25L MB400 £79.00 exc vat
Is the premium ion exc the same as clenspot's?

?(sorry im thick)
I live in hartlepool & have verry hard water and my PPM from merlin is 27-35....think its close to 450 ish from tap before merlin....THATS HARD GUY'S...
I would spend the extra £'sss to get the right resin for me....
Can any one clued up with the resin and maybee wot would be my best choice...point me in the right direction....etc....
Please,any help will be much appreciated fella's
Kindest regards
Justin
Web link-
www.clean-n-clearwindows.co.uk