steady as a rock
ultrareliable
superreliable
solid as a rock
steady-handed
reliably
solid as the Rock of Gibraltar
copper-bottomed
bankable
solid
hypercompetent
ultracompetent
good old
100 percent
trusted
impeccably
high speed, low drag
big
Oscarworthy
kick
flawlessly
like a charm
inside out
fine as frog hair
microfine
hyperqualified
well
run like a top
up to the knocker
copesetic
copesettic
copacetic
copasetic
superaccurate
sound as a bell
great
honest
superprecise
ultraprecise
superefficient
superbly
impeccableness
tried and trusted
clean
beauty
all that
dead-nuts
dead on
splendid
sweet as a nut