I would stay well away from the Shimano double-sided crank power meter. It’s proven to be very inaccurate. Best to read DCRainmaker’s highly detailed reviews. I think the problem is on the drive side crank.

I had good, consistent results with a single-sided 4iiii (Specialized branded version) on a LH Shimano 105 crank. My current bike has a SRAM Quarq crank PM which is also very good.

I haven’t used PM pedals, but they seem a bit more fragile/inconsistent than crank based PMs. But they have the advantage of being able to easily swap between bikes. Again I would read DCR’s detailed reviews before buying anything.