I have been using the LG Optimus G for a week to replace an aging iPhone. So far the experience is great, Android has matured to a level that most, if not all IOS apps have an Android equivalent. Having the 4.7" screen is a plus factor, but the build quality of the Optimus G is incredible (compared to the Samsung Galaxy S3 or even S4). You can think of this phone as an enhanced version of the Nexus 4.
The 13MP camera is nothing to write home about, but its not so bad either. I haven't tested LTE since Smart is not yet opening that service to other postpaid subscribers (please do it soon). But the HSPA connection is solid. Call quality is top-notch, the speaker phone is loud.
Having 2GB of memory and 32GB of storage is more than enough for my needs. Coming from an iPhone, fixed storage + non-removable battery is not an issue at all.
Some retailers include a flip cover and a bumper - they are great bonuses but I opted to get an OtterBox Commuter for the phone. I think the extra price paid is worth it.