What platform or service do you use to find owner's phone number for cold calls?

Anna, you can also check out Youtube, Podcasts  and there numerous other Social Media platforms that also discuss this topic.

Are there better platforms?

BiggerPockets now has a featured property management search option on the platform.

Be it stocks or real estate.If I want to gamble, I'll go to Vegas and loose quickly on the slots so I can have a cigar and enjoy a cocktail.Much success

I think the actual settings will vary if you are managing directly on platform or using third party softwares, etc.As mentioned above I think risking going vacant over a major holiday will outweight the extra housekeeping cost.Also, I am not sure how much volume you are doing but do not pay cleaners extra for holidays. 

Just wanting some feedback from others, in regard to these two platforms. 

Taking the bookings directly can net you more money, take power away from the platforms to issue refunds, and protect you from other platform issues.Once you are set up with the site I recommend making a new forum post about ideas how to increase your conversions. 

I've tried all of those, with the exception of Deal Machine, and unless I'm evaluating them unfairly, none meet 100% what I would want in a platform. 

Not, hey lets gamble since I love risk with 100k or more, and lets put my personal house, and car etc on line.