Which trip is better: Vrindavan–Varanasi–Ayodhya or Jaipur–Pushkar–Jodhpur/Jaisalmer?

I’m traveling to Delhi in March and planning to take a trip. I’m confused between these two option:

1. Vrindavan – Varanasi – Ayodhya

2. Jaipur – Pushkar – Jodhpur / Jaisalmer

Which one would you recommend and why?

I’ll be traveling on a budget, staying in hostels and exploring local places and food. What would be a realistic budget for both options?