I have only seen the Stela in use and not any of the Philips LED lanterns (whilst I've seen Speedstars installed, it wasn't late enough for them to switch on), but the Stela is suprisingly effective considering it is essentially a roof slate on a pole with LED's in it!
I would agree about Philips shoehorning in LED systems into existing designs though, which doesn't really give out the true potential of the light source - it is only the Speedstar series that has shifted away from this trend and gone into dedicated designs. The iridium series has far too much duplication: standard iridium, aluminium Iridium, Iridium 2, Iridium 2 LED, mini Iridium, mini Iridium LED... and then we have the 'fancy iridium' line like the Modena's and the Selenium's - on first glance these look like Iridiums, so I really don't see the point. The mini iridiums using conventional light sources are very glarry and not particularly pleasant to stand near to at night, whilst the family as a a whole has become far too common and so is now boring.
GRP as a material is now seen as old fashioned in favour of a return to aluminium (due to recycling issues, longevity, and new processes available) and a lot of GRP lanterns age very quickly compared to their aluminium counterparts. Sadly, Philips has a lot of GRP lanterns compared to Indal which has more Aluminium ones (the Alu/GRP split is about 60:40, with older designs like the MRL6, SRL8, Vectra, and 2600/1 being the examples, but is still in favour of aluminium)