Dual chamber suction feed air gun - Each chamber can hold 950 ml of each silvering solution, great for larger items.

Advantages - No need to clean out after each use, the whole unit can be stored for 3 months in a dark place in between uses.

Disadvantages - Set up times can be time consuming setting up for the 1st time, transfer efficiency is not to good, a little bit clumsy to use, a bit weighty on the arm for prolonged periods of use.

Dual pressurized spray cans - each chamber can hold 500ml enough to cover about 8sqft in one go, aimed at smaller components and parts - although you can silver larger items but takes a a little practice.

Advantages- Low investment, quick set up times, easy to use, store the solutions in the set up for the full 3 months just pull them out when you need them, refills for the spray cans are available.

Disadvantages - Can be a little slow going when spraying larger areas, a bit limited with spraying angle (need to be kept almost upright when in use).