Endnote trouble

While writing my thesis I cam across quite a few problems with Endnote. As you might know, this software allows you to maintain a reference library for writing scientific articles or something like a PhD thesis. It can insert references and format them according to different journal styles (e.g. Science random number or human readable PLoS ONE etc.) and create a reference list in a Word document.

But there are many problems

• It makes working with Word a pain. Each time a reference is inserted it's having a big think and then reformats the whole reference list. During which time both Word and Endnote are unusable. Also, if this coincides with with a Word autosave all your work progress since last save will be lost because Word will crash.
• It is slow. As soon as you hit about 10 references in a document updates take forever. 
• Occasionally it gets the styles wrong up to a point that you would be better off writing the reference list yourself. Science journal is not a book, so the city it is published in is unimportant!
• It is expensive. £200 for a single license, and there is a new version out every year. Also, older versions do not support newer versions of Word and don't receive updates.

All in all I will try to never use it again. It is just too clunky and buggy. I only have to find some alternative that works well on Windows, MacOS and Linux (just to be prepared for all eventualities).