If the PLASA Show in September provided a much-needed boost of optimism to a largely struggling industry, North America's main showcase, LDI - The Entertainment Technology Show, has emphasized the perception that, at last, the economic downturn is becoming an upturn. With over 10,000 visitors on day one and palpably more buzz than in Vegas last year, LDI has, to quote one long-term exhibitor who no doubt echoed the thoughts of many, returned to the quality of business of three years ago. It's been a tough time economically, compounded by terrorism, disease and war - but things, it seems, are looking up.