I first want to point out that most of these are my own, very subjective options and thoughts.
The first thing I want to touch upon is drying time. A lot of people here are on and about it all the time but personally for me it has never been an issue. Most of the time I'll just take what comes from the printer, do the post-production, if any and if it has to go out right away...of it goes. Never had a problem with it so I'm not sure why so many people are obsessing about solvent drying time here. Even when it comes to car wraps deadlines tend to be tight so it goes almost instantly from the printer to the laminator, also never had a problem. We have half a dozen or so vehicles on the road for almost 2 years now and none of the clients ever complained. As a matter of fact yesterday I saw one of them and it looks like on day 1.
As far as latex goes, or more specifically HP. Well...that depends on a lot on the dealer to be honest, that's the case with pretty much anything really. We have the worst dealer in the world with our Roland but the Roland itself is a fine machine. I don't have much personal experience with latex printer, in the sense that I never owned one. We had a huge scitex in a company I was a partner in a few years back and it was a huge pain in the ***. Your experience might vary with this but three things that really put me off with latex printers is: more expensive ink, being locked in to HP ink and HP itself.
My current technician worked for HP back in the day and he says that the machines themselves tend to be fine, with some exceptions, but it's the HP people that are ***holes. You are basically forces to use their inks (at least in our market) as well as their support cause nobody else knows how to support these machines and even if they did HP's supply chain is airtight so you can't any spare parts out of it...
All of the problems that I'm mentioning here are mostly related to price and the attitude of the HP people. From a high production perspective I personally can't see how someone can justify the enormous price tag of a HP or Vutek when you can these days get a printer that does 70-80% of what these can do for 1/10th the price tag, but maybe that's just me.
As far as quality goes I am incredibly satisfied with the quality our VS-640 outputs and I wish we would do more with it. It's also incredibly reliable, we have it for 2 years and it has only given us any trouble once. You can basically leave it overnight to print and you won't have any trouble, I've only done this once or twice because there is no need and the possibility of some unforeseen problems is always there, my main concern is the media freaking out and damaging the head in some way.
Hope this helps you.