honestly, i think you'll find that most all of these things will be the same. the internals are probably all made by the same company in china. it's most likely just the plugs & case that are different. i'd use whichever is cheaper!
i was thinking too... if mine fail again... i might end up going to LED rings. i know no one likes them because they aren't crazy-bright.... but even ccfl rings are kinda hard to see during the day. and i sometimes think the ccfl puts out *too much* light at night. the leds could fix this. i might take some and put some new, brighter leds in them. least they wouldn't burn out.... EVER!