I have to say that I have 2 pairs of Mountain Horse Rimfrost Tall Boots, and I do love them. They hold strong, they hold true to their product and I've never had cold feet using them.
BUT - they are bulky. I am going to sell my boots, and with that money I want to invest in a slimmer pair.
I have these ones:
2 pairs of those actually - but they are thick. I feel like I cannot feel Nelson enough with them on. Not like I can with my Mountain Horse Summer Riding Boots, or my Ariats.
What I would look into, because they are "slimmer" are the other Mountain Horse Models...
And these ones:
My little buddy at the barn I am at, has a pair of these and they are very sleek. I tried them on and I like the feel of them better than the boots I currently have.
I suggest, you go try on boots if you can - not sure if you can, but at least that way, you can get a feel for them. You may like the feel of the boots I have, or you may not.
There are many products on the market today. My Coach has the Ariat Boots and they look quite nice:
She loves them - and they look sleeker than what I have.