The Marvelous Trio

Shocking pink, olive green and dirty white. These are the colors of the Marvelous Trio, aka my three pairs of Nike Streak Zoom 6. The newcomer is the "Pink Panther", purchased at an eBay auction and arrived from England just in time to avoid extra custom costs (thank you, delayed Brexit). Now my arsenal is complete and set to last at least until 2021 or longer (knock on wood).
The first white Streak (now they are closer to grey) have currently covered 500 km, so I assume that soon I will be forced to identify a successor. However, I will handle them with care, hoping that they will last as long as their cousins, the Streak LT 3, who carried me for 1000 km during 13 months, before the mesh ripped completely on both shoes. I think that high temperatures, downhill sessions and water are the most dangerous enemies of the Streak model, therefore there might be chances to enjoy my current pair until May 2020. But let's wait and see. Anyhow, I don't have any problem now!
To conclude, here are the prices of the Marvelous Trio (this is the thing I am most proud of, considering that the list price for each is 100 € or higher):
1) White: bought in September 2019 at www.km42.info at 50 € + 9 € delivery costs;
2) Olive Green: bought in November 2019 at runningwarehouse.it at 60 € (free delivery);
3) Pink: bought in January 2019 at eBay UK (auction) at 36 £ (42,50 €) + 12 £ (14 €) delivery costs (and a couple of euros extra for currency exchange fee and credit card charges).

Sneakers vs Technical Shoes

When it comes to running shoes, you will find two different "schools of thought": on the one hand, experts, coaches and self-declared gurus claim that a high-quality technical shoe can make a huge difference; on the other hand, you will hear voices saying that speed and endurance depend solely on the runner (and on his talent combined with proper training, motivation and, why not, a prodigious DNA). Willing to touch results with my hand (pardon: with my foot), I decided to make an easy test, comparing the feelings I experienced running a 30 minutes session with a pair of technical shoes (Nike Zoom Streak 6) and a pair of sneakers (Mistral Seventies). Here are the results, of course based on my personal experience.

Weight
The shoe is quite heavy, when running on the forefoot I felt like I was dragging a heavy burden on the back of the shoe	Very light (below 200 gr). When I run at a 4:00 min/km pace or below, I have the impression that foot and shoe become one thing
Breathability
After 30 minutes running, my socks were totally soaked	Even in summer, the foot can breathe and sweats moderately, thanks to the very thin mesh and the essential material of the upper
Stability
The foot is not firm, especially on the heel. On the front, I had the feeling that running 10 or 20 minutes more, I would have had blisters	Feat are firm, shoe is stable, especially running fast. A real pleasure to sprint with these shoes
Grip
Not so good. The sole “scratches” the ground, and it makes a noise like a “clap” when the heel lands on the asphalt	Very good grip, responsive soles, these shoes fly like feathers on the ground, yep providing good traction
Comfort
Too much room on the back and in the front, bulkier than technical running shoes but more “dispersed” and superflous	Very well cushioned around the ankle, essential upper, the blown rubber midsole ensures a “soft” stability
Responsiveness
Probably I should have run longer to evaluate the absence of a shock absorption unit. The impression is that the sole is quite hard and the shoes don't provide any propulsion	Two great features of the Streak 6 are the Zoom Air unit and the plate. When shifting running style, from forefoot to heel running, the unit on the back of the shoe allows the runner to rest the feet. The midsole plate pushes the runner forward and ensures speed.

Bottom line: a pair of good technical shoes are worth their price. They guarantee speed, comfort and stability. If your aim is to improve your personal bests, you cannot do without them. Cheap "normal" shoes can cause injuries, blisters and bad running habits.