The Miele Guard L1 Electro is available now for $1,499 making it the most expensive model in the company’s L1 lineup and considerably pricier than even the $380 canister vacuum that Dyson still sells. That seems like a lot for a vacuum that still has a power cord, but the Electro does offer additional functionality including a built-in LCD touchscreen for changing the vacuum’s cleaning mode. The screen also displays status messages letting you know when the filter or vacuum bag needs…