Check out the fiberglassflyrodders forum and thefiberglassmanifesto blog that Cletus mentioned for everything to do with glass. Anyways, back to the question at hand. I do have experience with both rods you mentioned. First off, this is not your grandpas slow, heavy, glass. I think you are talking about the Scott F2 6' 2wt (orange-ish blank), not the previous F series (blank blank)? I found the Hardy 7' 3wt "Brook" to have a very soft tip, and almost "noodley" action most suited to small dries and short casts. Not to say that it cant do light nymph work, but there are much better options out there in my opinion. The Scott F2 6' 2wt on the other hand is quicker with a more progressive taper. It also has a relatively soft tip, but not as soft as the Hardy Brook. It will cast medium size dries and light nymph rigs with absolutely deadly precision. It can cast a nice loop with less than a foot of line out of the tip. This is a game changer on small, brush-choked streams. The Scott F2 6'6" 3wt is my favorite small stream rod. I chose to keep the 6'6" 3wt F2 over its little brother because I found it to be a little more versatile in what it can cast. Another glass maker to check out would be Steffen. He makes some of the best modern glass on the market right now. Steffen has a HUGE selection of rod lengths and weights to choose from and his price is hard to beat. Last time I checked they ran around $400 with a 2-3 month wait time. There are lots of modern makers to check out in addition to Steffen including, but not limited to, Kabuto, McFarland, Epic, James Green, and Larry Kenney.
In my opinion, glass is the ultimate material for a short small stream rod. Glass is not dead.
If you have any questions, please feel free to PM or post here.
-Chase