Welcome to the board!
I'm a newly certified diver also and I'm very addicted to it
I've been diving every weekend (minus one) since I got certified 5 weeks ago. About three weeks ago I picked up a Halcyon Pioneer 36lbs MC and dove it - great setup! Then I got a Fred T heavy BP/STA since I dive 7 mil out here in SoCal .. I didn't like the STA too much because it put too much weight on my back - which surprised me because I was trying to move some weight off my weight belt. So I'm now using just the Fred T heavy BP w/ integrated STA on the 36lb pioneer wing.
To answer your question about the difference between the Halcyon and Fred T stainless steel backplates: Halcyon SS - 6lbs, Fred T Heavy SS - 9lbs. The Fred T is also drilled for OMS, DiveRite and Halcyon (probably more, but I'm not certain) products so I think its more versatile. The quality seems fine on both of them .. the Halcyon comes polished and I got the 'unfinished' Fred T plate, but a Dremel and flap wheel got it nice and smooth
I only have experience with the SS BPs so I can only offer information on the Al plates that I've read about ... and you've probably already read about them 
Its a great set up and I think you will really enjoy it - I fell in love with it the first time. Oh .. and setting it up wasn't as difficult as it seemed when I first read up on the BP/wings, but I do recommend testing it out in a pool first just to make sure.
You'll probably get more (better?) information from the more learned folk here ... great board, eh?
Paul
I'm a newly certified diver also and I'm very addicted to it

To answer your question about the difference between the Halcyon and Fred T stainless steel backplates: Halcyon SS - 6lbs, Fred T Heavy SS - 9lbs. The Fred T is also drilled for OMS, DiveRite and Halcyon (probably more, but I'm not certain) products so I think its more versatile. The quality seems fine on both of them .. the Halcyon comes polished and I got the 'unfinished' Fred T plate, but a Dremel and flap wheel got it nice and smooth


Its a great set up and I think you will really enjoy it - I fell in love with it the first time. Oh .. and setting it up wasn't as difficult as it seemed when I first read up on the BP/wings, but I do recommend testing it out in a pool first just to make sure.
You'll probably get more (better?) information from the more learned folk here ... great board, eh?
Paul