I used to use the SMB boots for years. About a year ago my trainer had me switch to polo wraps bc she didnt like SMB boots. Looking back, I don't think that the smb boots really support the horses legs. I have the older style SMB boots, but I think that I like the new SMB boots better. They seem more fitted and molded to the horses legs. I now use the Equifit T-wraps. They are really cool and lots of support. You do have to know how to put them on correctly, but I agree that it would be hard to screw up a horses legs using polos, but I have seen it done. Sooo, overall I like polos, plus you can clean them better and more frequently than boots. (I suggest t-wraps, but they are like $90 dollars)
I love Alexis, Bindi and Maggie!