If you want a disadvantage, take the more traditional brands and you can cheaply buy buckets of 2nd user feeders, cloned feeders, cloned nozzles and other consumable bits. You can get none of that for Essemtec and some of those are really quite expensive e.g €400+ for a nozzle, €6k+ for a CLM 10 lane feeder; I think about €90 for a replacement cover tape spool on the CLM feeder, its this bit on CLM that wears with age and affects the accuracy of the rest of the feeder.
I think these machines are best the way we both have them, non-conveyor, standalone for small to medium batches but this comes at a cost if/when you try and do bigger batches. Manually loading each PCB gives your effective placement rate a massive de-rate unless you're standing next to like some kind of coiled spring.
We also found the dispense option intriguing, and the fact it was an option did play some part in us favouring this machine. The numbers hinted at in 2012 however were far lower than €55k but I never did get a proper quote for it, but then I had the impression both paste dispense and HyQ feeders were at that point something they had in the catalogue but didn't quite want to sell you. I think the very newest incarnation is perhaps better than @robint91 was told as it was suggested to me recently by the new UK rep that a new person in charge of such things at Essemtec had told them what they had wasn't good enough and they had something in the pipeline. Its after all quite some way behind what you can do with a MY700 and the same bits go in their dedicated dispensing machine which competes with that in some applications.