Burn time will be longer with briquettes and temps more consistent, but I still prefer lump when possible.
The only time I use briquettes is when I smoke a butt in my UDS and I need a good 16hrs burn-time and very consistent temps. Lump just doesn't quite get the job done as well, it runs out of juice towards the end and temps fall off. Anything shorter than a 6 hours smoke and I use lump.
Grilling? Lump all the way. Temps aren't extremely critical and burn time doesn't matter...
Lump only. Briquettes are made from piney woods and minerals. Lump is 100% hardwood charcoal and adds flavour that briquettes don't. I can live with the time differences, even when smoking.