I'm currently using version 4.16.7 in preference to the newer versions as I have heard there are quite a few teething problems with the intitial releases of Limewire 5.
4.16.7 works fine and will complement and work with any new version that has been released in the interem. Go ahead and use 4.16.7 and have no worries.
I find it to be a good stable release that is easy to use and works fine with my new Vista laptop.