Reddit mentions of ONGUARD MinPin 3-Piece Locking Skewer Set, Black, 5 x 163mm/5 x 128mm/Seat 5 x 50mm

I was looking into this last year, and I found TreeHugger had the best guide. (Un?)fortunately, your bike is going to look like a good bike to anyone in the know. Proper security is probably going to do you more good than making your bike ugly. Your bike isn't worth that much that you want to spend $400 securing it, so here's a few tips.

First, you can get rid of any quickreleases, in favor of either locking skewers, gravity skewers, or something else that will make taking the tires off more of a pain.

Second, use a u-lock and a cable lock. Both wheels should be secured separately, both to the frame, and at least one of the locks through your bike rack (both should fit, if your u-lock fits right now). The purpose of the two types of locks is to require two types of tools to free your bike from the rack.

Third, get renter's/homeowner's insurance to cover the bike. Should be less than $10 a month, and will give you peace of mind.

Finally, if you just want to prevent people from riding away with your bike, there are.... other... less safe-for-work methods...

Im so sorry this happened to you. I cant give any better advice than has been given, however, I have advice on how to prevent your next bike from being stolen.

I REALLY hope that cable lock in the picture isnt the lock you used. Using a cheap $20 lock to protect what I'm guessing is a $600 or more bike is asking for trouble. For your next bike, get locking skewers to protect your wheels. They make it practically impossible to remove your wheels when used right. Then get a U-lock, and use it anywhere on the frame. If you only protect your frame and not your wheels (aka if you dont get the locking skewers, or use a cable lock for your wheels), then you're looking at paying around $200 per wheel in aftermarket parts.

Locking Skewers:
http://www.amazon.com/Pinhead-Bicycle-Locking-Skewer-Pack/dp/B001Y9X328

http://www.amazon.com/OnGuard-MinPin-3-Piece-Locking-Skewer/dp/B00773XY9M/ref=sr_1_2?s=sporting-goods&ie=UTF8&qid=1373286334&sr=1-2&keywords=onguard+skewers

or the best:
http://www.urbanbiketech.com/Pitlock-Locking-Skewer-Sets-s/1.htm

For U-locks, any is pretty good, but the higher-end you go, the better, and DEFINITELY sign up for the insurance the lock comes with! Here are two of the best:
http://www.amazon.com/Kryptonite-Standard-Bicycle-Transit-FlexFrame/dp/B005YPK9SY/ref=sr_1_2?s=sporting-goods&ie=UTF8&qid=1373286741&sr=1-2&keywords=new+york+lock

http://www.amazon.com/Blackburn-Sing-Bicycle-U-Lock/dp/B00470OYE2/ref=sr_1_2?s=sporting-goods&ie=UTF8&qid=1373286786&sr=1-2&keywords=blackburn+u+lock