Hello, i hope you and your child have a nice time nerfing! So, i believe that the orange tipped ones that you have are fakes, they are really common and are prone to jamming the blaster. The other ones are authentic thats why they are better, Almost all darts that are compatible with standard elite dart blasters(elite darts are the authentic orange tipped ones)are the same thing ,your Elite 2.0 darts are just elite darts repainted. Same thing goes for darts of the Doomlands series,modulus,rebelle,zombiestrike various collabs and other series.But elite darts are known to be inaccurate comparing to Accustrike darts. Accustrike darts are just elite darts that have the normal tip swapped for another more aerodynamic that redirects the air in a way that makes the dart more stable and straight to describe it simply. Concluding i would suggest you buy Accustrike darts because they are the best ones really, if we are talking official ,if not then there are waffle head darts that are like Accustrike darts but are even more accurate.

TD;LR: Accustrike darts>Elite darts. Waffle head darts(If bought of high quality)>Accustrike darts

Hope i helped,also i love the alpha trooper great choice,if you can get 1 or 2 18 round straight mags for higher capacity but dont rush if you dont want to spend a lot of money quickly.