Must admit the argument (?) for Atmos or Intergas is quite compelling / persuasive !!
As for reliability on boilers IMHO it is down the collective toilet !
we have installed 54 boilers not budget cheap boilers £600 t0 £750 + vat price tag , 22 ( to date) boilers have suffered a fault !! when I say a fault this does not include multiple faults on a boiler eg the ign board failed 7 days later the fan failed , that is counted as 1 fault
Shocking reliability , the worst I have ever come across & we have fitted Ravenheaps in the past !
Should have got you name down for the Intergas training day on the 12th May Transam.