Unless incompetently designed they are going to sound the same, so buy anything that satisfies the urge and meets your budget / aesthetic / excitement requirements and then use my Handy Hifi Helper™ to describe the upgrade in appropriately audiophile terms.
Instructions: Take any word from the first column and combine with any word from the second column with "yet never".
Code:
Accurate Veiled
Airy Recessed
Analytical Veiled
Transparent Muddy
Tight Bloated
Firm Boomy
Natural Boxy
Coherent Ragged
Articulate Congested
Crisp Dark
Delicate Uncouth
Detailed Harsh
Dry Thin
Smooth Edgy
Fast Smeared
Focussed Fatiguing
Liquid Grainy
Lush Cool
Musical Nasal
Foot-tapping Peaky
Neutral Recessed
E.g., "Firm yet never boomy".
Advanced practitioners may take more words from the first column, e.g., "Musical and fast, yet never fatiguing"