We've got the attic dormered and the plan calls for 10 can lights up there. My contractor mentioned that we should be sure we want the can lights as they will be like holes in the insulation letting all our heat out. Ceilings are low up there, so can lights are the best option. I noticed there are special lights with a thermal chamber that allows you to insulated right up to it, and then special "trim" covers that reduce heat loss even more. But of course, they're like $140 each. Is it possibly worth it? My electrician seems to think the can lights would be okay and that you could shove the insulation in around them without the 3" space usually required. any comments or other suggestions as we make this decision? Thanks.