Choose Your Lights
Recessed light fixtures come in a wide range of types and styles and include standard incandescent, fluorescent, halogen, LED and other lamp (bulb) types. Decide how many fixtures you need, then shop around for the product that best meets your lighting goals (and budget).
If the ceiling is below an unheated attic, be sure to choose airtight, IC-rated fixtures. These can be covered with insulation and are sealed to prevent heated room air from escaping into the attic. Be aware that your electrician probably can buy your fixtures below retail cost, but he will likely add a markup that negates the discount (it's still preferable to have your electrician buy the fixtures).