The E11 would be good. but like others say. since ur new and don't have any good stuff. the E17 with the DAC inside would be a great boost. It can plug into Desktop and Laptop's USB, coaxil and optical out and also AUX :) using a wolfso WM8740. So far reviews have been extremely positive.
The iPhone "technically" has 4G. This is the problem these days. Nobody knows what is what. America's Next Gen wireless discolure act should help fix this. there are relatively little restirctions on what companies can label and call their things and this hurts consumers. One companies def of 4G is usually a bit differnt from the next's. HSPA+ is considered a 4G tecnology and both T-Mobile and AT&T call it as 4G. AT&T was actually rmoured to be trying to pressre Apple into changing the 3G sign into 4G, because AT&T uses HSPA+.