Gateron Yellows are extremely popular within the community for a reason. They're excellent linear switches, and extremely affordable. A little lube, and some films will make these perfect for any build. 

Switches are sold in packs of 10.

Quantity 1 = 10 switches. 

Specifications:

• Linear
• 4.0mm travel
• 50g actuation
• Black bottom / Milky top 
• 5 pin 
• UNLUBED from factory