I can't comment on price; However, one picky item.
The 6 gallon glass carboys (both Italian & Mexican) that I have i my store take a #6 1/2 bung. The #6, especially when wet, can be pushed into the carboy fairly easily.
And I still don't like the 7.5 US gallon primary. Possibly not enough room for a grape skin pack, and definitly not enough room for a vigourous stir, at least not my kind of vigourous stir.