Brief word on Specialized tyres: I work in one of the largest specialized retailers in the country, and we carry just about every iteration of their components available, thus I've had ample opportunity to not just use their products, but also to talk to other people whom use their products. As such, I'd say the Specialized road tyres are among the worst rolling tyres for their price, with the armadillo's being markedly worse. Don't get me wrong, if you're just commuting and keeping slow, they're great insofar as longevity, durability, and puncture protection, but the compound has very poor characteristics for the price range. They're slow, bouncy, and tend to squirm when pressed. Despite the ability for me to get these tyres for free (or next to it), I still opt for either Vittoria or Schwalbe on the road. If you're commuting I don't think I would recommend a tyre other than Vittoria's Randonneur Pro tyre - durable, fast, great water characteristics, supple but responsive compound, and good weight (they feel quite like a tubular). I have this tyre on my touring bike, as well as several other people at my work - not a single one of us would rather anything else on this type of bicycle. If you want something nippy, light, and extremely grippy than look no further than Schwalbe's Ultremo R.1. The only issue I have with them is in cold weather, as they don't get much grip, leaving me spinning under extreme acceleration off the line. Onto locks: I've used a small U-lock (smaller the better) and a heavy braided cable for the occasion that I need to lock up, but I avoid that at all costs. Incidentally this also happens to be exactly what the lock companies say to use in high-risk situations, as the two different locking systems require different tools to defeat, and the small U-lock is resistant to pry-attacks, which the larger ones falter with. But honestly your best advice is just not to lock, and keep your bicycle with you whenever you can - everywhere that I've ever worked has allowed me to bring my bicycle in provided I cleaned up after it, and kept it out of the way. Another option would be an attack-monkey. Nothings getting past that.