for pvp mage staff, for pve melee fighter style (dagger), for both BW light armor set
if you dont strive to be number 1, then PS is just fine in any aspect of the game, be it solo pve, party pve, 1vs1, olympiad, mass pvps, you wont really get lost but you also wont be the most shining star
The hardest exp among all summoner classes is until 70 lvl (or until 50 lvl because u can exp on daily rb and in this case it's equal to other summoners). After 70 it's the same as other summoners in exp. It is interesting in solo pvp/oly. Ban bot in mass pvp. If you are going to play casual style and don't want to own all server, phantom summoner is very good class!