Spike recommendations

Can’t go wrong with 1/4 inch pyramid. Legal at most tracks, and long enough for a good grip in almost all conditions. Go ahead and spring for the ceramic ones. Slightly more expensive (and lighter!), and while they won’t make a measurable difference in your times, the option to choose the color you prefer is worth the cost of the upgrade.

Nike zoom superfly elite 2

Depending on your brand preference, If you're planning to run 800/400/1500 then here's what I would suggest:

Nike: the best all-around for these disciplines would be the new air zoom victory or mamba v. DRagonflies are good, but not aggressive enough for the 400, at least that's how it felt for me and I was wat more comfortable in the air zoom victories in the 400/800. I personally preferred dragonfly just for 1500, but air zoom victories were still good for 1500, and bunch of pros are running 1500 in air vics.

Adidas: adizero ambition is great for 800/1500 and aggressive enough for 400. When I tried it, the pop felt like nike air zoom vics, but maybe just slightly less aggressive.

New Balance: the MD-X, is a great spike, honestly as aggressive as air zoom vics, but definitely not as harsh on your legs. People don't like this spike due to unremovable spikes, but I have raced and worked out in them for whole season and honestly the spikes are pretty much as sharp as they were in the first place, since they are titanium, they are very durable. Just maybe try not to walk on pavement with them hah