For resort skiing, weight matters less than fit and downhill performance. Most alpine boots weigh between 3,500 and 4,500 grams per pair, and that extra heft translates to stability and power on the slopes. Since you're riding lifts, a heavier boot won't slow you down.
If you're touring or ski mountaineering, weight becomes a major factor. Touring boots typically range from 1,800 to 3,200 grams per pair, and every 100 grams saved per boot reduces fatigue on long ascents. Freeride boots with walk modes land in the middle at 3,200 to 4,000 grams.
The trade-off is downhill performance. Ultra-light touring boots climb beautifully but can feel sloppy and less responsive on the descent. If you tour but still want confident skiing on the way down, aim for the middle of the touring range. And never sacrifice fit for weight—a lighter boot that doesn't fit properly will ruin your day faster than a few extra grams ever could.