
A long time ago, I promised that I would post these comparative photos of the Maerklin and Hag Re 6/6 Loks.
Unfortunately, my Maerklin Re 6/6 was slightly damaged and must be returned. I did manage to take a few photos while I was inspecting it.
Here is the Maerklin 37320 alongside the Roco 69730 and the Hag 205:

If you compare the three models, you can see how each one has it's better and poorer features.
The Roco model clearly has the most detailed pantographs as well as being the only model with raised lettering and city crest. I am also going to give the Roco model points for the Swiss Crest on the front.
The Hag and Roco models have separately applied windshield wipers.
The Hag model's Swiss Crest looks like Chrome, but I don't like the little indent in the housing where the crest is inserted. Both Roco and Maerklin look more like the prototype in this regard.
The Roco model is the only one to have the white stripe extending fully around the locomotive body. This does not extend past the start of the footboard on the Maerklin and Hag models. Unfortunately, the footboard is a little too wide on the Roco model, so this kind of cancels out the advantage.
The Maerklin model seemed to be the heaviest of the three models. I did not have a chance to weigh them.
The Roco model has the slider mounted on the intermediate bogie, which allows for the outer bogies to be powered by cardan shaft. Both the Maerklin and Hag models have traditional motors, where the front bogie has the slider and the rear bogie has the motor block.
I did notice that the Maerklin lok is reversed when compared to the Hag Lok, in terms that the slider is on the bogie which is in front when the SBB FFS side of the lok is visible (Lok heading to the right). The Hag model has the slider on the opposite end of the lok, so that the SBB CFF side is showing. Normally, this is considered Cab Nr 1. You can also notice this difference by looking at the position of the air blast circuit breaker and the layout on the roof.
The Hag model has the best lighting. The light channels are milled so that there is a real headlights effect. Unfortunately, the Hag lok does have a problem with light leaking through the frame around the motor bogie. This problem can be solved with a little electrical tape or other masking agent.
The Roco lok has good lighting, but not as focused as the Hag model. On the red model, the lighting glowed through the locomotive shell, which was not satisfactory at all. This is a simple problem that could have been solved by moulding the housing in red instead of neutral plastic.

The Roco and Hag models have a driver in Cab Nr 1. All three models have detailed cabs.
None of the models have true close coupling. The Hag model (original) has a metal hook, which IMHO works well combined with my trains. The Roco model came with a standard Roco hook and loop. I have installed a Hag NEM hook, which works pretty well. The Maerklin lok comes standard with a Maerklin 7203 close coupler head.
I installed an ESU sound decoder in the Roco lok. The speaker is sitting on top of one of the bogies. The Hag has no sound. The Maerklin lok has blower and horn sounds. I noticed that the horn was set for continuous blast and not for single toot when F3 is pressed. I wonder if this can be corrected with a Lokprogrammer as I do not have a MS or CS. The Roco has the best selection of sounds, as the decoder can be bridged over two Motorola addresses, enabling additional sound options.
It has already been discussed in other posts that the positioning of the lok number and the crest is slightly off prototype on the Maerklin lok. The Hag lok has them in the correct position.
I am waiting for my 37321 Re 620. I have not yet decided whether I will run the 37320 as an Re 10/10 or operate the loks separately. I may choose to run the 37321 with the Re 4/4II from the 29859 (11376) and use the Re 6/6 with a 1980s/1990s Intercity or Eurocity as my Hag lok is analog and not digital.
In any case, my 37321 should arrive any day now and the 37320 has to go back to the dealer to be repaired/replaced.
In the meantime, enjoy these pics and this short review of some of the aspects of each model.
Oh, and for those who are curious, the photo in the background is a photo of the TEE Roland pulled by a Re 4/4II in the TEE livery and is in a SLM (Schweizer Lokomotiven und Maschinenfabrik) Flyer that I picked up in Switzerland as a child. I presume this is a bridge over either the Aare or the Reuss on the route between Basel and Luzern.
Regards
Mike C