MyRide, EFTA, or Nautilus untethered?

If you had to have one of those seats untethered, which one would you choose?

Nautilus. It had really good HE numbers untethered. That is assuming of course I couldn't use the EFTA or MyRide rearfacing.

Nautilus. I did very well untethered in testing.

Yup, Nautilus.

nauti, easily, unless you could use one of the convertibles REARfacing.

Thanks. That's what I thought, but I wanted to make sure

I'm going to try to get either the MR or the EFTA RFing and put DD#5 in the third row, but if she has a "flare up" (she's been having joint problems lately...her pediatrician and the orthopedist she saw both feel sure she has juvenile arthritis, but she has no official diagnosis yet because they want a rheumatologist to be the one to do that, but we can't get an appointment with one until December...) she is in A LOT of pain and there is no way I could get her in the third row (I have to go through the back to buckle her, which isn't a problem typically because she can climb over the seat and into her car seat) without moving her leg quite a bit, which would really hurt her. Its hard enough to get her in her seat outboard in the second row. So I could possibly have to put one of the FFing kids in the third row and there are no tether anchors back there. I'm hoping after a few weeks of re-harnessing DD#3 she will be able to continue to sit correctly in a HBB. She has been riding in a HBTB since mid-august and did great until recently. The past few weeks I've had to speak to her several times and tell her to sit correctly. I told her if I had to remind her again that she would have to go back into a harnessed seat and then yesterday I looked back there and she was leaning over to get something off the floor... She's a very impulsive kid though, so who knows...