UBR. CBR or VBR-nrt?

Trying to tweak modem router and I cannot suss which of these is best
for normal Internet use. Any ideas?
TIA
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Paul reply-to is valid

"Paul" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Trying to tweak modem router and I cannot suss which of these is best for
> normal Internet use. Any ideas?

That would depend on you ISP.
I doubt if any home ISPs use anything other than UBR between you and the
exchange.