WL-550gE (Encore) vs. WL-500g Deluxe

[Les Wire]

WL-550gE (Encore) http://www.asus.com/products4.aspx?l...96&modelmenu=1
WL-500g Deluxe http://www.asus.com/products4.aspx?l...59&modelmenu=1

I haven't seen Asus WL-550gE (Encore) mentioned in this forum before, I tried to search the forum for "WL-550gE" but with no hits.

What are the differencies between these two routers?

It seems this feature is only on WL-550gE:
Broad Range - Triple signal coverage range of 802.11g standard
With Broadcom's latest BroadRange technology, the WL-550gE leveraged advanced digital signal processing to deliver the highest signal sensitivity and enhance coverage range by 300%

But are there other differencies and which router should i buy?
I can buy both models at my local Danish computer store: http://shg.dk/produkter/list2.asp?katid=5880#6342 for almost the same price. I would guess WL-550gE is better than WL-500g Deluxe since it's newer?
Why haven't anyone mentioned WL-550gE in this forum before, is it so new?

Thanks in advance