Solid bar (hard nose bar) vs roller tip
As with everything else, we butcher the English language here in Arkansas, but we refer to the said bar as a (hard nose bar).
Pro's of the hard nose bar are as follows: very reliable, better feel, less deflection, out last sprocket tips, less chain derail, great for dirty, tangled, leaning, nasty type cutting.
Here's the bad news: You probably lose a little power due to friction, This type of bar is somewhat harder on the tie straps of chain, Bar prices are significantly higher (sometimes 50%), Chain tightness needs constant attention. Last but not least bar length slightly shorter due to larger diameter of bar tip.
All in all I have used the hard nose bars with very good results. You can take them to a belt sander and true them up all around when the wear and they are like new. However in the last 10-12 years we have seen less and less of them in this area. Reasons vary but I think it has more to do with saw shops decreasing overhead and supply and demand (less demand=less supply). Cheaper, faster, better ideology. Overall if I had one available, I would use it without a second thought.