I want to combine a momentum ETF with the value ETFs I currently have(AVUV/AVDV/AVES), but there are many choices so it’s hard to fully commit to one. SPMO and IDMO are the most popular recommendations, but that’s probably because they’ve happened to have the best performance, which could just be due to luck. I’m more interested in which ETF actually has the most sound methodology based on academic research so that I’ll be better able to stick with it even if it underperforms other momentum ETFs.