SSDR as a concept worries me, and will continue to worry me.
It is perfectly possible to make a dangerous flying machine at any weight, and just because it's very light does not make it impossible that it'll suffer a structural failure or a loss of control. It's good design and robust testing that will ensure that.
On that basis, I think that unless you are fully qualified and able to judge the safety of an aeroplane - and to do so is a very big job which very few people are competent to tackle, you need to feel that you can fully trust the people who are selling it to you.
On that basis, I'd personally only contemplate buying an SSDR microlight which has been produced by people who have a solid track record of producing safety, Section S compliant, heavier microlights.
I've not been watching the market closely but from what I have seen, I'd say that currently three players have a pedigree that I'd trust my life to:
(1) Flylight
(2) Reality aircraft
(3) P&M Aviation
So, that gives you the ZJ Viera, the Doodlbug, Alatus-M, the Escapade Cub and the Magic Laser.
I'd personally be very careful of any of the rash of other aircraft which don't come with the assurance of having been assessed before sale by an existing and experience microlight industry player.
A SSDR Chaser was being threatened by Nigel Beale (of Skydrive) a while ago, and that has an excellent track record, as does the company - so if it re-appears, that I'd also look at seriously.
If I had money to spare however, I'm pretty certain of the current batch I'd buy the Escapade Kid. I've not flown it (although am open to offers!), but have a reasonable amount of hours in both the Easy Raider and Escapade, and a particularly high opinion of the competence of the team behind them.
G