Still contemplating whether to change all 4 tyres to Rovelo or just change 2 first to Primacy 4 to be within the budget. 3 of 4 tyres are worn out now
It all boils down to personal preference and what it is you want to use the tyres for. If it's daily grocery getter point-A to point-B type of short-distance driving then the cheaper alternative is the better solution.
If you want comfort, quietness, relative grip, the primacy is pretty decent.
If you want relatively cheap good performance tyres, the RE003 or Rovelo sport are pretty ok (based on feedback from others)
If you want relatively cheap track going tyres go look at Federal RSRR tyres.
All of these have pros and cons, especially if you're on a budget.
Personally though - if you have 3 out of 4 tyres worn out - I'd change all 4 and redo alignment.