I've been using the Blushield 5s for a few weeks. I usually wear a 12 in other brands, but the Blushield 5 11.5 size is a better fit. When I decided to go with them, I was lucky enough to have size 12 Gel Res 8s in a 2E width, the 11.5 Blushields, and a pair of size 12 Blushields to compare. I didn't weigh them, but I can't really say that the Diadoras felt heavier than the GR8s. They were definitely more locked in, though. I've worn Gel Res shoes for years, using the heel lock lacing, until I started getting achilles problems a few months ago from my last pair of GR7s. Now, I can't wear that pair of GR7s even for a few hours without getting heel problems. Even with the heel lock lacing on both the size 12 Blushields the GR8s, I felt a little slippage. I don't have any with the size 11.5 Blushields. Both brands use exactly the same stock insoles. Since I got the achilles problems, I've been using over the counter orthotics with a plastic heel cup anyway, which gives me better arch support (I have a high arch and instep).
There are a few other areas where I think the Diadoras are better:
- the laces are the right length for heel lock lacing. With every generation of the Gel Res, the laces are too short (for my high instep feet) when I use the heel lock lacing, and they're a PITA to tie.
- The Gel Res laces are really thin. Diadora's hold the knot better, and they don't feel like they're digging into your foot as much.
- The Gel Res outsole ends right at the outside edge of the shoe on the forefoot lateral side. In previous models, I've worn through the outsole there and exposed the plastic shank pretty rapidly, making the shoe feel slick. The Diadora outsole wraps up around that area and also flares a little to provide a wider footprint, which feels more stable.
- the outsole pattern. The Diadora modified herringbone gets thicker where there's more anticipated wear. It corresponds pretty exactly to where I see the most wear in my shoes. The Asics outsole kind of does that, but the logic isn't as clear, with the constant changing of angles and densities, and those pivot points never seemed to me to add anything to at least my tennis movement.
- This is a subtle one: I've always wished that shoe designers could figure out ways to make the logos functional and not just huge pieces of plastic that add weight and reduce ventilation (apart from the problematic resource waste and additional pointless landfill). While they could go further, the Diadoras feel like at least the lower part of the logo adds some lateral stability to the surrounding open mesh. The Gel Res 8 has a dense plastic upper surrounding their logo that provides the lateral stability, so the logo really is just pasted on. It's a modern designer thing - honesty of expression, material and function. Every other part of the shoe tries to achieve that; why not the logo as well, especially since it's such a huge part, area-wise, of the design?
In the past, I've worn Adidas Barricade 7, 8, and 9 (I think), Adidas Solecourt Boost, Asics Gel Res 5, 6, and 7, Asics Solution Speed, New Balance Fresh Foam Lav, and now the Diadoras. Maybe it's recency bias, but in my opinion, the Diadoras compare favorably to all of the previous models and are the best balance, for now, of price, support, comfort, durability, and design.
There's some confusion over the 6 month durability warranty with this Blushield model. I can confirm that they do offer the warranty, and there's a warranty card that's included in the box.