FWIW I have built
tens of thousands discrete transistor circuits and never ever had problems with Ft limiting my designs.
60MHz/100MHz/180MHz is the same , always
well above audible frequencies.
Speaking of silicon transistors, of course.
Now on Germanium ones, which have Ft measured in
KHz , not
MHz, yes, you audibly lose highs if you use them with high gain , which happens for example in old Fuzz circuits and Treble Boosters used by a few old time Guitar Gods, and which justifies the "smooth/warm sound" label.
I'd call that "lack of treble" and in fact can simulate it very well by adding a few 100pF (or 220/470/1000 pf) caps here and there, go figure.
Back to the Fuzzrite, not only I built clones but also had an original one, when they were new

(now where's the [mummy] emoticon?

)
A friend of mine's Mother travelled to Miami (remember I'm from Argentina) and he asked her to buy a Gibson 335 , unavailable here.
To make certain, he gave her a picture.
Boy, was he disappointed!!
She brought back a similar shape Mosrite "335" , which "the nice young salesman told her was better" , and who to sweeten the deal threw in a Fuzzrite, "free of charge/gift" .
Obviously I opened and traced it, and built clones.

We are in an "European Culture" country, so I used what's standard here, BC147/8/9 transistors, not Japanese or American types.
All worked like a charm and had the exact same sound.
That's how uncritical that simple circuit is.
FT? never cared about it (since all
far exceed what I need for Audio).
Hfe? I always bought BC147/8/9
C types, factory guaranteed between 250/500 and in fact clustered around 500, so after the initial tests I stopped measuring them, only checking a few samples every time I buy a new batch (I buy 500 unit lots) .
Thats why we tell you that:
1) we
agree that you built your Fuzz properly and it sounds good.

Congratulations.

2) we agree that different transistors may sound different.
3) we do not agree that Ft is the main parameter affecting sound, quite the contrary, and we worry that somebody building his own clone gets worried about Ft and that snowballs appearing in other Forums (mainly Pedal related ones) and "confirmed true" , because "I saw in SSGuitar and those guys are very serious" .
Just that.

PS: in fact I can easily picture pedal supply shops, as, say, Small Bear (just the first one which came to mind) or EBay sellers offering
"premium selected 2SC1740 transistors, Ft 140 MHz, as recommended in SSGuitar" 