Question for Gnar Build

So I found 2 builds, I currently use build 1

Build 1: Bork, Youmuu's, Randuin's omen, Last Whisper, Tri force, Boots: Tabi or merc or ionian

Build 2: Start of with Boots of Speed >> Phage >> Warmog >> Stinger >> Boots of Swiftness >> 2x Giant Belt >> Sunfire Cape >> Frozen Mallet >> Zephyr >> Trinity Force >> Alacrity

I found build 2 on his wiki, here is the description [Full Build]

Boots of Swiftness + Alacrity / Why? = 80 MOV SPD and SLOW RESIST, kite for Mini Gnar and a keep up method for Monster Gnar since he's so slow.

Zephyr / Why? = ATK SPD help mini gnar stack up his "W" which will be his main damage source since TOP lane has so many HP tanks. CD RED is always good, and gnar doesnt have MANA, so 2 out of 2. Plus MOV SPD and a Little AD. Of course the most important TENACITY.

Frozen Mallet / Why? = Mini Gnar can stack his "W" more easily if his target is slower, and Monster Gnar can keep up and finish off slowed champions. Plus HEALTH boost "E" damage and is a core stat for a Tank.

Sunfire Cape / Why? = HEALTH for "E" , DEF and DPS from the passive.

Warmog's Armor / Why? = HEATH and REGEN, since Gnar doesn't have MANA, REGEN boost his sustain and can maintain Gnar on the lane for more time.

Trinity Force / Why? = Since Gnar will be using his skills a lot, SPELLBLADE passive will be trigger quite often, RAGE passive will help to kite and pursue, MOV SPD and ATK SPD will help greatly, AP will help a little with Mini Gnar "W", AD is always good.

So...

Start of with Boots of Speed >> Phage >> Warmog >> Stinger >> Boots of Swiftness >> 2x Giant Belt >> Sunfire Cape >> Frozen Mallet >> Zephyr >> Trinity Force >> Alacrity

Which one is better?