This is just my personal opinion, if anyone else has another opinion then I don't mind, but this team got me through loads;
Sceptile, Arcanine, Espeon, Minum, Latias and Kyorge. Hope this helps!
No, you cannot be a member of Team Aqua / Team Magma in Sapphire.
Legendary Pokemon are the best of the best you want to get: Regice, Regirock, Registeel, Kyogre, Latias, Rayquaza. This is the best possible team you can have without trading!
Google Pokemon sapphire walkthrough and search through a walkthrough
Team Magma is absent in Pokemon sapphire, but exists in ruby. Same with team aqua in ruby version, both teams only coexist in Pokemon emerald version
the best pokemon to use is mudkip.
You don't get it in Sapphire, only Ruby and Emerald
in team aquas hide out
the best are:kyogre- main story pokemonrayquaza- also sub main story pokemonand your choice of either latias or latiosregirockregisteelregiceThe Most Powerful Team (6) Pokemon to have while in Pokemon Sapphire would be...SwellowLunatoneMightyenaKyogreRayquazaOne of the 3 starters in fully evolved form (mostly Swampert)
Latias,latios,rayquaza.kyogre,groudon and blaziken good team in Pokemon saphirre
In team aqua's hideout
treecko
The best water Pokemon in sapphire would probably be Kyogre. -Hope I helped...:D