Bitalino ECG or OpenBCI ECG, which One is Better Validated?

For Bitalino ECG we have two validation papers (see this site) For OpenBCI ECG we have found to this date one validaton paper in Heliyon: https://pdf.sciencedirectassets.com/313379/1-s2.0-S2405844020X00077/1-s2.0-S2405844021012512/main.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjED0aCXVzLWVhc3QtMSJGMEQCIAVzVY4WHvYaLwwzf3Hk8aXJqCBrh4nPfl6U9pMUA79YAiBPH6JXf%2BzTrJbTmEH1oVtEho%2FGTBG%2BwCYtCnphqEJDxirVBAjm%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F8BEAUaDDA1OTAwMzU0Njg2NSIMhTDhA1yBkWSuHPh8KqkEsFWQLP2htmIC%2FYaOCLlC%2FVlWCQ4xG%2F%2BYvnRSqQ7MrR9TT%2BAWLuj4r4uxOEC%2B6b5ymGW96ixkz0PykG0p8Xz4aVD6NEXmNfPoFC3bs2CJ18%2BZ9TVHyj%2FdZ8HCQBJPCQ0fgqfIh73c45PC0xwwSEy66cB1jWnmcI0XtHNPQGnn7ResKuRyKmAkfEe8n0goFmjFPj%2FKPb0%2B9cXAjgtMrNF1TC9Vw4lfANfajkhH5qVHqUyWOeqLdA7m7Vr4ysdjO8pCaA3FZifVWU68snonSkHlA%2BAs9VvSB7uXagqMVfgmsPCDKsIXgJrbb5dL1wuUttsTuj0pJ69WDXxazIKe5HW5hF5u3xGUo78o2R%2F06plxDvC8WATrjSYTRHX5%2F49UCgBNmpghvjRABudhqJRjU97nphP11E6%2Byn2vBnNaYFu4NywqdDMU0%2BMXogeqCVcWDDROlW5NA8RWElZQcSTQWW3SThOvFisCnm%2FK1hxuAXmUWQoj0HSGL7iODBOhnU4fkgF4hLyJxxAWPYu1frcDpU0rfsYZ%2FvZn6JFYclONOYGMWP7FAimfYWIbBvrNifSKQzXv%2ByHdQI%2FIC6U5JfcEbzC3FLlC2YM3flGi6R0uBKNnkCJq0RhMcWBP%2F4HvtR6mOUAOj79%2BEVLzXHNuFiChpSCLkKg6N1v6yY0EnG5R6MtnRXvBve5YzueLdkjHqw86m%2B47Hg9aFOWyEN47U0g8UJsdP68v89vjC%2F%2B2rTDo2MSZBjqqAeA3TNF%2Bft4ocIPjLpmmvsRDeJoEH0%2Frofv%2Fhp3YGs9Q%2F2V%2F1WHXczrqYAg8Bm%2F89akVKBMwq%2B2LWV6%2FBrkLj%2F2qYyObix2s%2Ft1GWYYOYBPU%2FbfGUoqlbD5E%2B2QN7veYQbU2wFRcIvq8zftnQirNhcknZ49VOQSd96PvFCBrlZ83Sd1vLmQUYspOil5dphpviZuKEBQ%2FsJFkAc4X6bR%2BOYE8k5wRB9BIMkV4&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20220926T055554Z&X-Amz-SignedHeaders=host&X-Amz-Expires=300&X-Amz-Credential=ASIAQ3PHCVTYSR2J2XXV%2F20220926%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Signature=0f5241f9753601909497d6a6e7970bddd59b3dbe9267815c320990a488031279&hash=7eadae41e488d9fe9c0532831826f6d5496411d3eb808acfcb04cdd9b9dbaf05&host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&pii=S2405844021012512&tid=spdf-2a36ad72-cc11-4321-841d-8ee94f8c0710&sid=4d07a78c194d974cb75b1b58f0382da23e76gxrqb&type=client&ua=5154545c0553000d530b&rr=7509c0db7ee3692b Heliyon Heliyon is a monthly peer-reviewed mega journal covering research in all areas of science, the social sciences and humanities, and the arts. It was established in 2015 and …