What are your thoughts on uob prvi miles vs citi premier miles?

I'd take Citi PM in general over the UOB PRIV for 3 reasons: Miles that never expire, an insane number of transfer partners, and miles that can be earned from the first dollar.

I hate to be awarded nothing because I bought something worth $4.90 (thanks to their rounding policies), then go home and find 100K UNI$ wiped from my account because I forgot to transfer them out to KF (where another 3 year countdown starts).

However, if your expenditure is generally high, the UOB PRVI has its merits, and you'd also be able to accumulate miles faster to burn them, since you have high expenditure.Furthermore, overseas spend is 2.4mpd, so if your expenditure is heavily skewed towards overseas spending, UOB may be a card to consider.

If you don't want to go through the trouble of calculating which card earns more miles based on a sample of your expenditure, I'd rather stick with Citi in this case.

And as a side note, the PRIV miles doesn't offer lounge access at all. Citi offers 2 visits to the priority pass lounges in a calendar year.

I'd prefer citi as they have more airline partners, opening up more sweet spots in hard to earn airline miles currency unavailable from the standard SQ krisflyer and CX Asiamiles that most other banks offer