Rambo is really the way to go, it will last a long time. I bought my big guy at least one blanket a year til I spent the money for a Rambo (which is going into it's 4th winter soon).
I had a schneider's turnout sheet for him, but that rubbed his withers bad (he has a long high wither but I got the v-free). I had a weatherbeeta that looked like a mini skirt on him and didn't last. I tried a Masta and it fell apart...
If you look around you should be able to find a Rambo original for a good price, maybe equus now or smartpak?
Rambo has been my choice for the big guy (84 in Rambo). He also did well with a Pessoa, but don't know if they run big enough for your guy - his was an 84 sheet and that thing was tough! Since it was an obnoxious orange and red, it was on closeout for less than $100.
People seem to like the Smartpak blankets, so maybe check to see if any of those come big enough. Pretty reasonable price and a nice warranty on them. I haven't tried one yet, but thinking about it for my 84 guy.
Go with Horze, but be sure you buy the most expensive model. I am a retailer for them for Europe, and I know their blankets as well as anyone can. There is a HUGE difference between the cheapest and the most expensive models. And even the most expensive ones are cheaper for what they are.
First of all I have an 87" brand new mw Rambo w/ leg arches. I need to get rid of it. No longer have horse. It is still in the bag. Let me know if interested! I just bought Eous blankets for new horse. Came from [URL="smartipony.com"]. Free shipping and great prices. I got the Phlegnon hw w/ hood and Banbridge sheet for $300. [URL="classicsaddlery.com"]. carries them and are great w/ fitting issues.
I also love my Rambo for my big girl. The heavy keeps her weeny thin-skinned self warm, and it holds up to her goofing off with the yearlings. I think we got all of hers on sale online, most of them from year's past versions/colors.
I like mares. They remind me of myself: stubborn know-it-alls who only acknowledge you if you have food. Titania: 50% horse, 50% hippo
Unforgetable: torn between jumping and nap time, bad speller