tknife:
<font face="Verdana, Arial" size="2">The handles are very comfortable, especially for larger hands.</font>
Regarding the models with the spine ridges, if you find these comfortable then I would be very curious to know what handle you find uncomfortable. I have used blades with grips that are well known to have poor ergonomics to most (Strider, Reeves etc.) and using them doesn't come close to the hand mauling experience that the TOPS will. Of course if they have models without these ridges then they will have much better comfort levels, however there will also be a large drop in security.
<font face="Verdana, Arial" size="2">The steel is pretty basic carbon, but sharpens easily and holds a great edge. It's also supposed to be easier to sharpen in the field, you could use a river rock if need be.</font>
In regards to sharpens easy, yes, 1095 is one of the easiest steels to machine and you can easily work it witheven soft hones very quickly (it pretty much loses its edge rapidly for the same reason). However, unless the work you are doing is breaking apart the edge, any tool steel will readily out last it in regards to edge retention, as will any of the high end cutlery stainless steels. As for sharpening it on a rock, this is more hype than anything else. Rocks are very hard, you can even sharpen the very hard and wear resistant stainless steels on them.
<font face="Verdana, Arial" size="2">They also have excellent customer service</font>
My only experience with their customer service was through non-existant email interactions. In my opinion if you put up an email address on your website as part of your contact info and you don't bother to check it - this does not qualify as great customer service.
<font face="Verdana, Arial" size="2">Busse steel is better, but they cost more.</font>
The Basic line is about 25% more (probably reduce this if you shop around) as compared to the larger heavier TOPS blades. You get a lot more for that 25%.
<font face="Verdana, Arial" size="2">If you are looking for a tough blade, you won't be disapointed in TOPS.</font>
I saw blade failures in the Sawback teeth (breaking wire), and the tip digging in wood, and the tip again and the edge digging an arrow head out of wood, and bent the main body of the blade prying. The Striders (WB / PAB) and Busse Combat (Basic and Battle Mistress), suffered no damage doing the same things in regards to the tip and edge nor prying (have not done that with the PAB yet though, would be very surprised if it bothered it though).
One last thing, the serrations on the Steel Eagle are very nice. They greatly lower the force you need to slice through rope and such and because they are flat tipped they can be sharpened right along with the rest of the blade.
-Cliff