the logic plus has a five year warranty,the main has a two year warranty.they are both mid range boilers.if you want a boiler that will work and wont break down spend a few more quid and get a worcester cdi.i prefer baxi boilers but the worcester cdi is the boiler that is least likely to fail in the long term.but if it does ,and your not insured it could cost a bomb;and they are tricky to fault find.if your on a budget go for the logic plus,five years of piece of mind.
DEANO RGI
December 2011