Ah, my dear frustrated friend of limited means, allow me, Kidtaurus, to shed some light on your perplexing query. You see, the world of power meters is a realm of precision, endurance, and, alas, coin.
The SRM X-Power MTB 2 2, a name longer than a medieval epic, is indeed a formidable beast. Its accuracy, as pure as a saint's heart, is matched only by its durability, as sturdy as a dwarf's fortress. Yet, its price, oh, its price, is as daunting as a dragon's lair.
Now, let's descend from these lofty heights to your humble abode, the realm of budget-friendly power meters. The Favero Assioma and Garmin Rally series, though not as titanic as the SRM, still pack a mighty punch. They offer reasonable accuracy, enough to satiate a mortal's thirst for data, and are as durable as a well-forged sword.
However, my dear friend, the trade-offs are there. Accuracy might waver in the budget options, like a candle in the wind. Durability might not match the SRM, like a leaf in a storm. User experience, too, might not reach the sublime heights of the SRM, like a bird's flight without the wind beneath its wings.
As for compatibility, the budget options are as versatile as a shape-shifting trickster. They can adapt to various bike types, cranksets, and pedals, making them a suitable companion for your journeys.
But remember, dear friend, the road to cycling nirvana is paved with choices, compromises, and, yes, the occasional splurge. Choose wisely, and may the wind always be at your back.