Timed vs inertia brake controllers

To the OP...'best' is way subjective...

I think my P3 is the best over all of them, you decide for yourself

Most folks who complain about bad or poor trailer brake performance
has a trailer braking system poorly adjusted to even poor components

Trailer harness wiring is famous for being poor to bad, undersized
gauge, etc

Read up on the TV MC (brake master cylinder) PSI sensed (sensed is
the eyes, ears, touch, etc of the trailer brake controller's input)

Ditto inertia sensed

Several reasons I love my P3...

• #1 is that I'll not open up and modify my TV's braking system for this
• #2I like the lead my P3 provides over MC sensed (lead as in starts the trailer braking before my TV braking
• #3 dislike highly integrated anything...all of them (fax/copier/printer/etc) have had one function malfunction so have to toss the whole thing
• #4 Highly integrated will use the other function 'integrated'...wonderful...till something goes south...then they all malfunction and a nightmare to 'try' to fix
• #5 Did I mention I'll not touch my TV's braking hydraulics for anything?

Now the biggie of my P3 vs MC sensed...unless that MC sensed system
also has a TV brake pedal sense

My vehicles have my personal braking tweaks and performance level
friction materials. My Sub has out stopped a BMW 5 series.

So I MUST have the trailer lead during braking

Mine setup does stop as 'one', there is no banging, etc. Smoooooth is
the best way to describe how my setup stops. Even when borrowing others
and that their trailer brakes are not in good order...my TV's setup
still has the whole stop as 'one'

Since GM has a nifty brake pedal switch, it leads the TV MC PSI build
up.

Meaning that the brake controller will tell the trailer to start
braking before the TV MC develops *ANY* PSI... How hard the controller
tells the trailer to brake is dependent on how much boost is dialed in
*AND*....how fast the setup is decelerating via the inertia sensor
inside the controller...MC sensed uses the MC PSI build up and has
no correlation with the rates of deceleration...unless they too have
an inertia sensor

I can stop the whole setup without ever developing TV MC hydraulic PSI

Again, that is a must for me, as my TV develops so much braking that
if the trailer brakes comes on at the same time as the TV's...the TV
might jack knife due to too much (vs trailer) braking

OP...you should NOT consider any time based and then decide on which
is 'best' for you...