I have a Bolt V1 Parker set-up, but the main reason I bought The Bolt V2 is to use Energel and Jetstream refills. Plus the Bolt V2 is a normal length size, due to the redesigned internal barrel and parts. The way The Bolt V2 is designed, engineered and built it feels indestructible! There are no unnecessary moving parts and accessories, all internal bits are made from metal, no gears to worry they will wear in time. Also the clip is made from thick steel sheet attached with nuts directly on the aluminium body. I do believe as well that metal pens will last much longer that plastic ones, but there are many working pens from the 20' up made from hard rubber, celluloid or any other plastics.