Ask HN: Help picking a name for my app

I'm developing a forex social webapp. There are two names that I like but unfortunately the .com isn't available for one of them however I was able to get two alternative names.

I want to show you the names and ask you to help me pick one from the available options. They are:

pipsandchips.com

forex is all about making pips. pips and chips sounds kind of like fish and chips and, I think it sounds kind of catchy and fun

tradebook.com

due to the social nature of my app I think the name would work really well. The .com isn't available but I was able to purchase tradebookhq.com and tradebookapp.com

What do you guys recommend?

Thanks!