Mythic Adventures - Legendary Item Undetectable vs Tricksters Supreme Stealth

[Grunge_]

Supreme Stealth (Ex): Choose one of the following senses: blindsight, scent, or tremorsense. A creature using the chosen sense can't automatically detect you, and must succeed at Perception checks as normal to do so. If you choose blindsight, this ability also affects blindsense. You can select this ability up to three times, each time choosing a different sense.

Undetectable: This grants its bonded user the ability to become utterly undetectable while invisible. While invisible and in physical contact with this item, the bonded creature can't be detected or scryed by any method.

So I can spend three Trickster Path Abilities to get full Supreme Stealth ... or I could spend a single Universal Path ability to get a Legendary Item with Undetectable, which is significantly better and may have additional powers?

There seems to be a balance issue here...

[Numarak]

Supreme Stealth is an (Ex) ability. It can work on a Dead Magic area, or inside an Anti-magic Field.

Supreme Stealth does not require the possession of an item, nor being invisible, nor being in touch to that item.

That being said, on my own experience, Undetectable is quite an over-powered ability, but it is very specific and can be easily contained with a House Rule, so, IMO, does not require any change.

[Saethori]

Undetectable works only while you are invisible, as per the spell. Supreme Stealth, as the name implies, functions using mundane Stealth.

This might be relevant if you lack reliable ways to become invisible, or you are in an antimagic area.

[QuidEst]

If you want to whisper or even telepathically communicate with your allies, the second one requires you to drop your super-stealth entirely.