Arriving "late," Apple's HomePod will be released on February 9, several months after it was unveiled at the company's developer conference last June.
Services: Apple Music, iCloud Music Library. Yes, it's limited to Apple-only services at this time, but that doesn't mean it'll stay like that forever. Over time it's possible the HomePod will support several streaming music services — just don't count on it.
Key features: In addition to streaming music from Apple's streaming services, the HomePod can be used to control HomeKit-compatible smart home accessories. While that does include some heavy hitters, like Philips Hue bulbs and the Lyric T5 smart thermostat, the HomePod isn't nearly as useful as a smart home hub as its competition.
Who it's for: Music lovers who also use Apple services. Unsurprisingly, the HomePod is the most locked down speaker on this list, but while it's also the most expensive, it's meant to sound the best. Some of its biggest features, including AirPlay 2 support and multi-room audio support, are also delayed until later this year. If audio quality is paramount to you, and the ability to ask questions and control other gadgets via Siri seems like a nice bonus, this is your only option.
My take: I'm not one of the few who have gotten to try the HomePod yet, and may not get the chance for a little while yet. I have, however, purchased speakers that were more expensive. Given that key features won't ship at launch, the HomePod may not hit its stride in the smart home world for another year. But, if you're in the Apple ecosystem, care deeply about music, and don't mind waiting for it to get better over time, early adoption might not be as crazy as it seems.
Price: It's the most expensive option on this list, but early reports suggest the $349.99 price is in line with the audio quality you're getting. In the smart speaker market, it's steep; in the audiophile speaker market, it's a bargain.
Source : http://www.businessinsider.com/best-smart-speaker-comparison-amazon-echo-apple-homepod-google-home-sonos-one-2018-1