New ones are very nice but something had to give in slimming them down. Significantly less battery life and the published figures for the new one are based on entirely unrealistic usage.
Apple just might let the old ones go out at knockdown prices and they'd be a bargain. However, they have in the past buried unsold stock in landfill sites just to prevent such price cutting.
Sum up: Superb if used with a Mac.
Regards
Rob