There is 15% off slings on the Mothers Direct website at the moment to celebrate baby wearing week!!! And I want to buy a new one!! Help me choose please

I have a Hug a Bub that I use but I'm not that keen on it as it is very hot for me to wear as I tend to over heat quiet easily, especially in this weird heat we have for this time of the year!! Also, my DD overheats easily too so we are both a bit hot in it when I'm wearing her. Also, I find it hard how I have to put her down to be able to put it on.....that's my main reason I want a new one. I also have a basic sling that just goes over your shoulder like a peanut sling and i love that for quick trips to the shops as she sits on my hips.... but this one im looking at below is for longer wearing....

I am looking at the ABA Cool Sling, the ABA Mei Tai and the ABA Simplicity Sling.... which one would suit me??? I want to be able to hold DD while I am putting it on me!!

Does anyone have either one of these that you can recommend to me to purchase?
They look cooler, less material.....

I NEED one that can be put on WHILE I am holding my DD and not having to put her down..... sometimes when you're out and about, it's very difficult to find a place to put DD down to put the Hug-a-Bub sling on.... I do like the hug a bub but I'm still looking for something better...

Thanks I want to order one maybe today!