I've been using the Viking chainsaw boots (available from Baileys or several other places) for a few months. The have a steel toe, a steel shank, and ballistic nylon for chainsaw protection.
I ordered them one size too big because I was afraid they would be cold in the winter, and I wanted to be able to wear a second pair of heavy socks to keep my feet warm.
Perhaps it is because they are one size too big, but the Vikings are not comfortable. They rub and make my feet sore in a couple of spots.
But ...... I wear them anyway. After chainsawing my knee last year, now I am Joe Safety, decked out in full wrap chaps and chainsaw boots. PPE is cheap compared to a $15,000 ER bill, and temporary discomfort beats being crippled for the rest of your life.
If money is no object, Labonville sells a leather chainsaw boot with kevlar liner. Most custom logging boot makers can also set you up with a kevlar lined boot.
Alternatively, wear the inexpensive Labonville kevlar liners inside your favorite footwear, providing the boot is roomy enough for the liners (they recommend one size larger than normal).