Rate these FUJI guides please.

Fuji not the only company that makes good guides. Pac Bay, Forecast,
American Tackle, H&H, Perfection, Aftco among others are also in the market.

Easy test for guides, take yourself a piece of 6 to 10 lb test mono with you
when you step into the store. Run it thru a guide on the rod you like and
saw it back and forth quickly under a little tension, you will soon see
which guides are superior.

If it's not important than why did they invent the roller guide?

Don't expect the stainless/titanium ring guide to take to many line passes
thru it until the line melts flat or breaks.

Hardloy, Aluminum Oxide is the same basic stuff, it got us away from the
above guides over 30 years ago.

Alconite is a Zirconia material and stronger and better heat disipation, a
little slicker, and if you notice the inside diameter for each sized ring is
a little larger than Hardloy guides. This is because the material is more
reliable and stronger the Hardloy so they don't have to use as much. The
ring to stainless guide attachment is also better on this guide.

SiC is good stuff, bring a lunch if you do the guide /line test it will take
a lot of work and may never break, due to much better heat disipation.
qualities. The titanium, not titanium finished, guides are lighter and
stronger and extremely corrosion resistant. You won't see them soon on a
Wally World rod. About a $100 plus a set for a longer rod.

You forgot Cermet, got $25 plus a guide?

sphipps, what is the mono test going to prove? also I have never seen a
roller guide on a bass fishing rod..have you? Is it all about heat? I
just don't see where line will generate much heat bass fishing..

You are right, but I don't always use my bass rods on bass, sometimes I use
them on the Gulf of Mexico, I use my smallmouth rod to cast to bonefish &
troll for big rainbows and brown trout that can reach 20 lbs, but more
likely will be 5 to say 12 lbs on light line. More accurately I use my
bonefish rod on smallmouth and finesse LM sometimes. Have also caught a
steelhead and Coho salmon on it from time to time and one 25 lb Chinook.
Was just trying to give you a visual reference to the different materials
and the reasons they may cost more.
Have a 30 lb rated boat rod with Fuji BHVLG Hardloy guides on it for about
20 years now, caught lots of fish on it in Florida when I lived there and
oversized 100 plus lb sturgeon on it now, they are just fine and I've had 80
lb Western Tuf-Line on the reel for maybe 12 of those years, with no ill
effects.