This set comes with six plates weighing 55, 45, 35, 25, 15 ... you’ll have fewer excuses to get a workout in when your weights are always in the building.
Currently, my favorite weights are the NordicTrack Select-a-Weight Adjustable Dumbbells. The grip is effective, even without gloves, and you get a good range (10-55 lbs in 5 lbs increments ...