I will recommend using the 12V versions, and get a magnetic transformer to drive them. This will give the best life. The most common wide range power supplies on the GU10 lamps suffer from being both crammed into a small space and from running very hot with very little margin. the GU5.3 12V ones are simpler, and have a larger value capacitor in them to provide better DC performance.
Electronic transformers are not recommended, unless you just run them off a 13.8V DC power supply which can then be a SMPS. Major reason is noise and radiated interference.
I have seen many of the 220VAC ones fail in a very short period, often the lower power ones use a capacitive dropper to drive the internal lamp electronics, or use a very low value capacitor that fails open circuit in a short time. The 12V ones mostly fail from being overrun from an electronic ballast that provides a waveform that can run a 12V incandescent lamp as it is a 20V pulse with a narrow width that the lamp integrates, but the electronics rectifies this and runs on 20V and dies after a while.
My experience with the mains powered lights is they have a much shorter life compared to the 12V versions. only extra cost is the mains 50Hz transformers you will have to buy, but they are pretty cheap when you go to a lighting wholesaler and get proper transformers. 20 years life on them so far at work, on 7 days a week running pretty hot in the roof space in a pile to get 2kVA of capacity for the lighting. Slowly changing to LED one lamp every few months.