I have the Velocity. There are several models but this is the one that I have:
http://www.amazon.com/Reliable-V100-Digital-Velocity-Steam/dp/B002LARHPI/ref=sr_1_1?ie=UTF8&qid=1389716819&sr=8-1&keywords=velocity+iron
It's expensive, but comparable to the Rowentas and Olisos. I used to use Rowentas, but like you said they leak pretty quickly. So I tried an Oliso and I absolutely hated it. The lifts would go wonky periodically where they wouldn't go up or down and it stopped heating at all after less than a year of use. I've been using my Velocity for over a year now and it doesn't leak, has incredible steam and you can override the automatic shut-off. I'm an obsessive ironer so my irons get quite a work-out! Ricky suggests not using the steam on the iron but instead using a spray bottle so that you don't have problems with the iron leaking, but I really like the steam better so I steam the heck out of everything that I make. (It's the OCD in me...)
As with everything, different irons will work best for different people so you sometimes have to just try different products and see what works for you. Right now, this one is working really well for me.
Nancy