it's me again, I am soon going to a travel after Tisha B'av and I am searching for a concise siddur so I can daven fastly. I found a really concise siddur called "ways of torah" made by a controversial Rabbi called Asher Meza. Is that siddur really kosher? The Rav claims he got inspiration from Rambam's and Saadiah gaon's siddur but is that true? If it's not kosher how can I get a nice concise siddur, I searched for Mesorat Moyshe, found it's download but the link is screwed. Pls answer thanks.
I have seen that this "rav" Asher Meza has no good reputation and that the siddur above is used by the minim messianics.