The tapco work great and will last a long time. The metal ones can be prone to bent feed lips and may not feed well after long term use or even short term rough use. THis is personal experience not just guess work. I would stay with Tapco's.
My long term fix for this was to buy an unfired SKS-D and I use the AK mags and have never looked back.
My long term fix for this was to buy an unfired SKS-D and I use the AK mags and have never looked back.