MTQ Capture is by far the best imo.

She tells you the ins and outs of a fight with a pleasant demeanor and some fun little witticisms so I would just stick with hers for your main guide. I haven't found other guides that are nearly as appealing to listen too nor do they give anything new and I tend to avoid Happy at all costs as I find his videos and personality quite grinding.

Xeno is good but a bit monotone but I still prefer MTQ since the info is just about the same.

Honestly with the scripted nature of the fights there is also very little difference in guides outside personality.