I really like the Smartpak Adelaide fleece boots. They are comparable in price to Dover's fleece boot, and they seem to fit and hold up a bit better. I wash/dry/generally abuse mine almost every day and they have lasted seven months now and still look nice even though they are white. I like the fleece with all of the new research saying that neoprene gets too hot on the legs. The sizing of the Adelaide boots is a bit odd, but Smartpak customer service was wonderful to go and measure the boots for me. The L/front and L/hind fit my 17h horse well. Another horse who is 16h wears a M/front on the front and L/front behind. I have an 18h horse as well who has to wear the Dover boots due to size, and I really like the Adelaide boots much better for the way the fit and for durability. Hope this helps!
I use both of these. Really easy to put on and off, hold up pretty well (I've used them for turn-out and xc as well), and easy to clean.
My guy interferes pretty hard behind when we're working on something new, so I keep a couple pairs that I switch between. These have held up the longest and are fairly well priced compared to whats out there.
It might depend a bit on the horses you are buying boots for and how hard they are on boots as to what will be the most effective for you.
Seems like our entire barn or horses wears these - they are skeepskin lined, easy on/easy off, hold up well, come in a variety of colors (I prefer white patnet as they whipe off easily and I can keep them looking new forever)
I have 3 pairs that I switch out weekly, wash em in the washer and let them air dry. They stand up to anything,