I will start this off by saying I have been playing runescape on and off for many a years.
I have to say that I think Runescape EOC and RS3 (HTML5) is the best things to happen to this game.
While I dont support the freemium models such as squeal of fortune, I think runescape is heading in the right direction.
I have been playing the HTML5 Client as of recent and think it looks beautiful. Definitely some unforeseen scaling issues when you can see so much further than before. A few adjustments or world scaling might fix this.
For a game I started more than 8 years ago, I am pleased to say I am enjoying it more than ever before.