LG has sprung a surprise: a slick and well-designed tablet that impresses without the headline specs.When you first pick up the LG Optimus Pad 8.3, you'd be forgiven for thinking it was from another brand. That's no disrespect to LG, but more a statement showing that it's a company that's changing its mindset in the phones and tablets market.While the smartphone arena is dominated by the G2 for the company, with its rear volume keys, the G Pad 8.3 is a slim and mostly metal device, something LG tells us is inspired by car and aeroplane monocoques.The metal is surrounded by harder plastic, but LG also said that the decision to use metal for a large part of the rear of the device contributed to actually lower weight, rather than increasing it at the expense of using a more premium material.