I have the RCBS Chargemaster, a buddy has the Lyman 1200DPS. The RCBS is better than the Lyman, but it's not a huge difference. The Lyman is more sensative to surroundings, heat, and air and it requires a 30 minute warmup period, where the RCBS warms up in about 20 seconds. The RCBS is also much easier to change powders with. They are both huge time savers when it comes to reloading though.