Keston 25 was once on my short-list, partly due to it's shallow depth (a
particular requirement) but negative comment from various sources on
reliability and support, though not universal, has put me off. At this
point, Worcester Greenstar R 24i (I think it was!) is one possible
alternative on the fully modulating front, but I think selecting a boiler
will be easy(er) if I can reasonably forget about non-modulation.

Egremont