There’s about a billion posts regarding this issue. To sum up the main points;
Simply put, it’s down to preference. Both have their pros and cons and it’s down to your individual needs. (Such as latex not needing to degas before laminating, depends how patient you are). Though eco solvent has its merits, such as colour and length consistency!
Secondly, and I can’t stress this one enough. It shouldn’t all be about price, sure saving money is great but you want the dealer that’s closest with the best tech support. No point saving $500 initially if you’ll have to spend $700 extra on your first service call. Then if there’s no techs nearby you may be better with latex (a lot more user replaceable parts than on a solvent with no training)
Thirdly, budget is always ideal. You said “comparing the two machines” but there are a LOT of different HP and ES machines, all of which have their very own cons and weaknesses. Knowing what you’re willing to spend would help a lot in deciding what to recommend.