Owlet vs Nanit - which baby monitor actually worth the money?

Looking at getting a smart monitor and keep seeing these two mentioned everywhere. We're FTD in Seattle and want something reliable but my wife wants something that doesn't feel like overkill. Anyone using either of these? The Owlet seems more for peace of mind about oxygen levels but is it actually necessary or just paranoia? And the Nanit with the video review feature... is that gimmicky or genuinely useful for tracking sleep patterns?

Please be real with me about whether these are worth $300+