We are going to purchase a gas insert (for our masonry fireplace). Local brands are Majestic, Regency,Fireplace Xtrordinair and Valor. Valor and Majestic seem to be $1000+ less than the others. Any help We have a two story house, but the fireplace will primarily be used to heat our Family Room/Kitchen area (42 x 15). We do have a double door size entrance directly across the fireplace which leads to our entrance hall which has the staircase leading to our second story. Thanks. SJ