I had problems with PLA not sticking well enough to kapton tape. I had problems with it sticking too well to painter's tape.
Somewhere in this forum, I ran across a post where someone suggested using adhesive plastic printer sheets on the print bed. I bought some Clear Adhesive Backed Ink Jet sheets sold under the Computer Graphics brand. You can buy 12" x 12" sheets, so I can cover my entire print bed with one sheet.
They work great! Everything from tiny to very large prints completely adhere to the bed, but they pop off easily afterward. I haven't touched my scraper since I started using the sheets. To whomever made the original suggestion, thanks!