I have tried numerous "bread" knives. Most are not long enough for my liking. I have stuck with the Dexter Russell roast slicer for well over 20 years.
They saw through hard, crusty loaves as easily as through brioche and with just as fine a precision.
I used to buy them at Smart & Final for 10.99 initially, then they went up to 14.99, sometimes they could be found cheaper online but there was shipping cost.
Now they are $19.79 on Amazon. And free shipping. Read the reviews.
By the way, I will be selling my big Wusthof two-handle cheese knife with the 12 3/4" blade. If interested, PM me. I never really used it on any hard cheese, just once to see how it worked on Caerphilly.