Time was when Peter Child's Superflute, made by Robert Taylor was my only choice in a hss deep fluted bowl gouge and I've used mine for a long time. Now every manufacturer, small and large, slim or rotund offers a bowl gouge and the advantages of their flutes and grinds run the gamut, at least the ads say they do.
I can pretty well change the grinds for myself, but I don't do flutes, so forget about the different steels & grinds unless the flute or steel affects or controls the grind in some way.
Are there basic flute shapes other than 'U' and 'V' ? ie. Flutes that are significantly or distinctly different from these. Seems most are variations on a familiar theme either 'V' or 'U', but I suppose there could be some satisfactory hybrids that I've not tried.
In your experience what are the advantages and disadvantages of the different flutes you have used? How much does cost count above $50? Do you keep any OEM handles that are obviously too short, for any reason other than pride of purchase?
Turn to Safety, Arch Fortiter