Reddit reviews Vilano Aluminum Road Bike Medium (54cm) Commuter Bike Shimano 21 Speed 700c, Black

In my experience Craigslist is a waste of time unless you really know what you're looking for, and someone is desperate for money. I've spent months trying to find a quality road bike at a reasonable price through Craigslist and Pinkbike. The deals just didn't show up.
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One day while running I developed a stress fracture in one of my metatarsals and was destined to not run for 2 months. Enough was enough.. I needed to get back on the road somehow and exercise. I said to hell with Craigslist and took to the actual internet for an answer. First stop was looking at value bikes at bikesdirect.. They had some good deals, but everything seemed out of my price range for what I was looking for (not to mention the reviews that i've heard about their bargain brands haven't been mostly positive). Then I tried Pinkbike, but living in the South not many people here even consider exercising, let alone riding anything without a motor.. The bikes were few, far between, and out of my budget range.

I wanted a road bike that could be used for both commuting and exercise that wasn't a cheap piece of steel welded in a third world country.

After some digging around I took to reading every possible customer review that I could on Amazon and stumbled upon an all aluminum 21 speed made by a company called Vilano for under $200.

I took a gamble and ordered it. I wasn't dissapointed.

This bike is quality. The welds are tight, everything is lubed up, and I didn't even need to true the wheels before riding. The way it's shipped is close to 80% assembled. The only tools required to finish it off were a flat head and an allen wrench.

The company seems to be a small brand looking to put out a good product in competition with all the inflated names. I've had it for months now, and I use it to commute and do some 10 mile timed rides now and again. (I added a $20 tri bar for when I do those, Amazon purchase as well) Hasn't let me down yet.

Here's the bike I ended up buying.

BONUS: I frequent r/beermoney as well, and participate on a few survey/ptc revenue sites. There are easy ways to get Amazon gift cards in your down time and knock some of the cost down on your purchases. You can do enough in a weeks worth of down time to cover shipping and handling.

I also live in Florida, I'm 6 foot and ride (Vilano Aluminum Road Bike Medium (54cm) Commuter Bike Shimano 21 Speed 700c, Black https://www.amazon.com/dp/B008CE9KKM/ref=cm_sw_r_cp_api_jJoryb28RTAGD) this bike @ 54cm. My commute is about half the distance as yours to my workplace but this bike has been taking me to and from for the last 6 months. Also http://www.pedalroom.com/bike/she-doesnt-have-a-name-31077 here is my PR profile I've been working on so you can see the things that have been added.

You can try this. $199 Aluminum road bike

I've actually been looking on amazon because the bikes there are pretty affordable. I'm not sure if these are any good, but any advice? I've found 4 that I'm considering.. based on not much information:
[first bike]
[second bike]
[third bike]
[fourth bike]

UPDATE:
Upon reviewing some more options that are a bit more affordable to me, I've come across two bikes that strike my interest

This one: http://www.amazon.com/Aluminum-Commuter-Shimano-Speed-Bicycle/dp/B008CE9KKM/ref=sr_1_4?ie=UTF8&qid=1408395226&sr=8-4&keywords=commuter+bike

And this one: http://www.amazon.com/Vilano-Aluminum-Speed-Shimano-Medium/dp/B00595BNPM/ref=sr_1_9?ie=UTF8&qid=1408395226&sr=8-9&keywords=commuter+bike

(sorry for the long links) What do you guys think of these? They look pretty good, but I don't know much about bikes, so again reviews and insight on how good they are is appreciated.