Replacement for NetaHeat80 LPG - recommendations?

Our venerable NetHeat 80E just went bang (literally!). I've been thinking it needs replacing anyway so this just confirms that decision.
What do the team recommend as a replacement? Reliability when used intermittently is more important than ultimate efficiency. Also any recommendations for someone to fit it in the Ipswich area would be very welcome. It's LPG (as in a big tank outside).
Chris Green

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.