I hate this kind of **** because no one truly knows if it would be good or bad. If it was obvious, there wouldn't be a huge split between businesses and those informed. The liklihood is it'll be good for some people, and some companies, and some politically motivated reasons. And bad for a whole load of others.
This. This is the only correct opinion. There's no overall better or correct choice.
It just so happens that a bunch of the forensics work my company does is farmed out to us from police (and private) organisations in the EU who don't have the breadth or depth of expertise to do it themselves. If we leave the EU, we'll essentially be unable to work with most of these places. There's still way more than enough of a market in the UK to sustain us, but it's still a loss of diversity in places we can get work from. Lots of people I know, particularly those from my university course, work at companies in a similar situation (pentesters especially).
A lot of the negatives that people espouse in regards to control of our laws, border controls, I don't really care about as they don't affect me personally and I don't really know anyone that they've affected directly or indirectly, at least significantly enough for me to notice.
A lot of the benefits happen to benefit me and a lot of people I know, for example several of my friends are currently doing paid PhDs thanks to EU grants that they couldn't have afforded otherwise. Chances are they'll have to cut their PhDs short - and thus lose their livelihoods and future careers - if we lose access to those grants as the UK has crap funding for the sciences (about 20% of all of our science funding comes from the EU, IIRC).
A quarter of my university course was Romanian, and the fees that they paid as EU students greatly benefited my education directly in terms of specific hardware and software that it funded the purchase of, and a lot of them are now working in pentesting and networking jobs here in the UK. The majority of those people wouldn't have come here if we hadn't been in the EU.
So, I think you can figure out which way I'll be voting
Pretty much all of my friends and family with one notable exception will be voting to stay in.