I don't dislike Miyabi in general. I find them to be overpriced most of the time though. I'd not regret the purchase in your shoes for what you paid. I actually gift out their lower end lines like the Koh, Evolution and Kaizen because I find they compare favorably to something like a Tojiro or Fujiwara FKM in terms of performance and are hands down better in the F&F department. Also often times are more laser like, have better steel (in some cases) or at least steel that is more easily sharpened in the case of the FC61(13c26) and a fair lookers. These are good beaters, loaners or gifts to non knife nuts. In fact I like to keep a Koh on hand at all times for when I am feeling too lazy to deal with carbon, or I want to cut a single lemon that I forgot about for use in the middle of a meal or my wife wants to use it etc. For a beater they sure win out, for me, to a standard Vic, Wustie etc.
How does any of that stack up to collecting and using handmade knives, it really does not. Imo anyway. Perspective.
Enjoy your new knives regardless. Or sell them off if you don't. Not a big deal. At the price you paid you won't lose out.