This dock is nicely made, and feels pretty solid. It has some limitations, largely because it has to work with USB which will always be more fiddly than proprietary connectors. The USB mount is compatible with the Nexus 4, i.e. the wider edge of the connector is towards the rear of the dock. Make sure this is true for your phone too before buying.
The connector is wobbly, but this is deliberate to allow it to meet different case and phone sizes. I find it very easy to dock the phone. The dock is not heavy enough to pull your phone out without having to pin the dock down, but there is a nice flat surface to make holding it down simple, and you can do it one-hended.
I used this with a Nexus 4 with the poetic black bumper. I have yet to try this dock for syncing. It claims to support it, and certainly all the pins are present on the USB connections.