i was thinking of picking up pic related, the upanishads, aswell as Bhagavad Gita both by eknath Eswaran but was wondering if there are better versions of the texts out there that
Not unless you can read Sanskrit
everything can be found online
If I remember correctly, that guy did an alright job of translating. The principal Upanishads are short, I got three different translations at a used book store for about four bucks each. Look up the translators and see what people say about them. Some people should be avoided. You said you want to read the bhagavad gita. Don't get the bhagavad gita as it is, by prabhupada. Worst version. Dude was a cultist. Anything else should do.