Seconded, the pokégear can be counted on to go 'briiing!' at the most annoying times when the random trainer has decided to recount the tale of how he beat a really tough Rattata for the umpteenth time (Honestly, where's the "Couldn't care less." response? -.-) and chasing down the random challenges that do arise becomes a serious pain in the behind really quickly (To the point where I found it more convenient to level against wild pokémon back in the second generation). At least the Pokénav phone in R/S/E had unlimited memory and handy-dandy markers for active challenges, although it was still too much hassle for my liking. With the Vs Seeker you can focus on battling precisely the trainers you want and don't have to wait for them to take the initiative. The slight bother of compulsory recharge is a non-issue by comparison to that of chasing down trainers across the whole freakin' region, and I'm quite used to breeding pokémon, so "walk 50 steps" or whatever the amount was really isn't anything by comparison