I print on PET tape. It's much better than BuildTak, blue painter's tape or kapton tape, if you have a heated build plate. It's far more durable than all three. I've printed hundreds of things on a single piece of PET tape! It still doesn't need replacing yet. ABS sticks well to PET tape at 105 C. PLA sticks well at 60 C. Both pop off on their own at room temperature. So there's no struggling with the prints to get them off the plate. They just pop right off when it cools down.
I print PLA on PET tape with a build plate temperature of 60 C. It normally sticks really well to the PET surface at 60 C, and then pops off when it cools down because it doesn't stick at room temperature. This is great, MOST OF THE TIME.
I have a FlashForge Dreamer, which prints PLA very well, and corner lifting is rarely a problem with my setup. But for those occasional times when corner lifting is an issue, the PLA print won't pull off the PET tape like it will with blue painter's tape, but nevertheless, corner lifting is not desirable, so that's when I opt for using Elmer's Purple Glue Stick.
If you haven't tried it already, a thin layer of Elmer's Purple Glue Stick on a PET tape covered build platform will prevent corner lifting almost completely. You apply a very thin layer. Heat up your build plate to 60 C for PLA, and then start printing.
When the print is done, and I don't need the glue surface, the glue easily wipes off with a damp cloth because it's water soluble. Great stuff. I highly recommend it. Hair spray works too, but I don't like using it. It's hard to control where it goes and it smells BAD.
I have not tried it on a room temperature build plate. I always print PLA on a build plate set to 60 C. I'm not sure how well Elmer's Purple Glue Stick works at room temperature with PLA.
I love using PET tape. It produces glass-like shiny surfaces without the danger of using glass (which can shatter and cut you). I hate blue painter's tape with a passion! Things stick too well to it, and prints often contain little pieces of the tape, and the tape needs replacing all too often. I have NEVER replaced my PET tape. It lasts and lasts. But you need a heated build plate for it. Kapton kept breaking, and didn't work well with PLA, so I didn't use that for long. BuildTak is very expensive compared to PET tape and it wears out faster than PET tape, doesn't produce the shiny surface PET tape produces, and sometimes things are stuck so well to it you can't get them off easily. But there are things that won't stick to PET tape, such as HIPS (unless I apply Elmer's Purple Glue Stick) and some very odd varieties of ABS I've used (again the glue stick fixes that). So it's not the perfect solution for everything. But its very cost effective. It outlasts Kapton, blue painter's tape, and BuildTak by a long shot. So you save a ton of time and money using it.