what is the best gear for pvp smite

Depends on realm.

I use:
Coa ChamBer + stashed: Coa 2 x 40cr/19ed/10@/add jools + Coa ChamLo + Griffon 5/-5
Enigma AP
2pala/20fcr/29str/60life + 2pala/20fcr/24str/20@ + 2pala/10fcr/48lr/17@/52life/23str
God PB 15/3 100% perf + SOP ST 45@/15/15 100% perf (also stashed 65/121/4 with 4 x 9str/30ed/30lr/7fhr and 25/-25 foh scepter and 20/-20/45@ ST)
Cta 3foh/3hs/2conv 5/6/x + 100% perf 45@ spirit st
Bug belt
WaterWalks + stashed Bitterspurs
Trang oul's + 20ias/15str/20life/27lr/10cb or smt gloves + Dracs
10fcr/5 str/14dex/55life/11@ also stashed: 10fcr/4-6str/15dex/58life/30lr and a 10fcr/str/dex/39cr/32lr/@ ring for dual stack and a BK and a 250/20 raven.
Wisp 20% (always, may drop it vs cold/fire sorc)

20/20/25 torch
20/20/x annie
9 x pc 44-45
1 x sc 5fhr/5@
9 x 20/5@

Stashed 5 x 20/11 cr and 2 x 20/11 lr

This gives a very flexible VT that dont care what the enemy are, it can handle any combination of enemies at once and i dont have to swap gear 24/7, but i can still optimalize if i want.

Here is guide for you : https://forums.d2jsp.org/topic.php?t=36888250

Here's a Guide For You A:
https://forums.d2jsp.org/topic.php?t=2723347

Go All 08's: Btal's, 08 Valk, A. Slipper's, God Pb, and 08 Boots/Rings, Ftw A! Gl G.

My old budget pvp smiter

inventory
torch
anni
20life/any res charms
fhr/any res charms

waterwalks upgraded / triple res boots / Gore riders ( depends of situation )
Verdungo 15dr / thundergods vigor / arachnid mesh ( depends of situation)
Draculs / cleglaw / 20 ias + stats if use BA grief ( depend of situation )
dual raven / raven + rare ring / Raven + dwarf, wisper,Bk ( depends of situation)
Grief Pb or Ba 390+ dmg
Upgraded Zaka / Exile ST ( depend of situation)
Mara 25+ res or highlords
Coa 15dr 2 sox ( ber+15req jewel) or shako with jah inside

This will work good for a casual play if you already have the skills.

as a non budget one you will use some pc sks + life , spirit shield , jewelers shield with nice ed jewels,fcr amulet,foh stick cta