I have seen this questions a few times in this forum, but the answers are now all more than a year old.
I have been postponing the upgrade of my old 1.5 website for a long time now, but i'm getting more and more stuck with new extensions and php versions.
I have been advised to use the 3.0.3.9, but i'm wondering why... I see that there is a 3.0.4.0 that has been released and also the v 4.1.0.2 seems to be the current version (and i guess the 4.0 wasn't stable, but most of its bugs should be fixed by now) and i'm a little hesitant to spend a lot of time, effort and money into an upgrade to a non current version. I'd love if that upgrade could last me another 10 years

Any advice on this and why?
Thanks!