Tom G
Sorry for the long post but a little background may be helpful in answering my question.

I am building a fairly large (14 ft x 41 ft or 4.3m x 12.5m) two deck layout and it is time to make the turnout motor decision.  No helix but a continuous climb between decks.

The layout has two major yards and combined there are about 90 turnouts including classification yard ladders, coach yard, loco servicing and arrival and departure tracks.  About another 30 turnouts throughout the layout.

Turnouts, in easy to reach sidings in industrial areas, will be controlled by Caboose Industries power routing ground throws.

All code 83 HO track.  The turnouts are mostly Micro Engineering and I am using the Micro Engineering ladder track system for the yard ladders.  I am also using Peco Electro Frog turnouts.  All frogs will be powered from the track buss via the turnout motor internal switch to maintain the correct polarity.

I plan to have the yardmaster control all traffic through the yard via single momentary pushbuttons for each turnout along with red / green indicator LED's to display the status of each turnout.  The yardmaster will have the option to use the macro commands in the NCE DCC system to set a route through the yard.

The NCE 10 amp radio system will power the track buss and I will have multiple power districts for isolation.  Given the size of the layout I may require a second NCE 10 amp booster for track buss power.

I will use auxiliary boosters to power the turnouts.  I am currently testing a Tam Valley auxiliary booster but I am open to other brands.  The Tam Valley is a 3.5 amp continuous and 5 amp trip.

I have purchased a DCC Concepts AD-8fx and have it controlling four turnouts on my test tracks.  For now this device is my choice for turnout control.  Regardless of the turnout motor there will only be two wires between the motor and the AD-8fx.  I can mount the AD-8fx close to the layout schematic and turnout push button controls with minimal wiring to pushbuttons and LED's.

Since the AD-8fx turns power off at motor stall auxiliary buss power requirements are low.  In fact the LED's may draw more continuous power than the turnouts.

Now the question.
I need to choose between three turnout motors - Cobalt Classic Omega, Cobalt iP Analog and the Circuitron Tortoise.  I am leaning heavily toward one of the two Cobalts.  But which one????
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For a start, the Cobalt is much smaller than a Tortoise. (That alone
For a comparison of Analog IP and Omega, see page 2 of this:

There is of course, the Digital IP with built in DCC decoder that connects directly to your DCC accessory bus, so reduced wiring
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