Do I absolutely need a Sarnak Battle Shield as a Paladin?

[Beaniron]

I'm lv10 at the moment and I'm using Clay Guardian shield right now, 25AC 50HP, it's the best I have at the moment for my paladin. People are telling me to get one if I can, which I cannot because my funds are depleted.

Generally I 2h whenever I'm in a group, but for soloing/tanking,I was wondering if this is good enough to hold me into my 40's or 50's, or if I need to get my hands on a Sarnak Battle Shield ASAP.

My weapons are Sword of the Morning, Ghoulbane, and Soulfire.