don't get a Ferroli, they used to be really good simple reliable boilers but with there latest boiler they've decided to take all the repair and service instructions out of the manual, we went to service one and couldn't because we couldn't get it apart. I emailed Ferroli to complain and they said its because they want the engineers to go on their training courses instead, which is all well and good but each course for each model costs £50, you lose a days takings attending, and they aren't even offering any courses at the moment as they have no instructor. I have a sneaky suspicion that the real reason behind it is they want the customers to have to call out their own engineers and charge you a fortune.
the only boiler i would consider is a Vaillant or a Worcester and for a quality top of the range boiler like that you would be looking around the £2000 mark.
if you live in Birmingham or nearby give me a shout.