Oh my god.
Firstly, if you want opinions from people, you should have asked earlier. From what I understand, you are intending to get an iPhone 5 in a few more hours. What is the point of asking MacRumors folks now? To get some back-up? To soothe your soul that the phone you're getting is good?
If you are looking for non-biased opinions, I'm telling you, you have come to a wrong site. What's more, in the iPhone sub-forum. Will you expect people to have a balanced view, or more or less, opinions that are biased towards iPhone?
Then, your question is really vague. Other phones? Specifically, what phone? Lumia 820? Samsung Galaxy Note 2? Samsung Galaxy S3? HTC X One? Each and every phone has its own weakness and strength. You can't compare iPhone with a pool of hundreds types of smartphones. Tell us more specifically, for example, iPhone 5 vs Lumia 820, then, it's easier to answer your question.
I can only answer the question about the impression of the iPhone 5. Pros: bigger screen than iPhone 4, thinner, cool design, much faster chip, RAM and GPU meaning you will get much less stutter and lag compared to the iPhone 4. Cons: expensive, the screen dimension is a little stupid. Wish they have broadened it a bit more, then the phone wouldn't have looked like a TV remote.
Good luck in your purchase. I can see that the prices in Vietnam are still high, wait for few more weeks.