My wife of 11 years and I have Platinum wedding rings. Polished them for the first time the other week and can't see the difference from before.... More hard-wearing than white gold and doesn't tarnish like silver.
Been asked a few times if mine is ti. So understated and discrete too. Just the way I like it.
Ti wedding ring myself, don't like the gold rings. I personally think gold rings look naff and Nickel in them puts me off them. Couldn't afford Platinum for myself so Ti was the next best think. I like it, like the look of it (did have to look for a long time as them in the shops where 'oribble looking things)
It's also a light ring to wear.