I must say I tried Locopon a couple of years ago... and at first it seemed ok although modified the DNN core but after that it was a bit of a mess and only caused problems.  Not sure if it's changes since but it didn't play well with everything.

After going over various options, some good with content and some fairly average... I've really given up on any localisation within a single portal of DNN and recommend a portal for each locale.

This isn't to say the localisation modules aren't up to scratch but there are other modules, settings etc that just aren't truly great with localisation. For instance most (or all) e-commerce modules with DNN are rather limited.  Although they may present information for the selected locale, when wanting to use local currencies etc the settings didn't cater for this.

For content based sites, I might consider a single portal with localisation but any Web 2+ or e-commerce sites I really can only recommend separate portals for each locale if you want proper control over all aspects.

I am increasingly convinced that Locopon DSLocalizator is the best solution for DNN multilanguage portals! I've used it in my last published website www.anticocasaletoscano.com

I've localized this site in only one day! Menu, page title, meta tags, pages description, modules title, specific replacements for some module and other and other... all localized without problem using DNN 5.2

It give me the possibility to change very quickly the localized content. Above all, this is a free solution!

Locopon's DSLocalizator is very great module, Thanks to Locopon!