I own Tobin's DSS medium S.S. backplate. His wings are really nice designs. I did, however choose an Oxycheq Signature 45 because it provides lots of lift in the same size wing as their 30lb. It's also a doughnut shaped wing while Tobin's are U shaped
unless he's added newer models recently. If you do a search there's a huge thread
about that choice/difference on the board.
Bob recommended my 45 to me but he also recommended DSS wings. I chose according to my own proclivities
I LOVE his backplate which incorporates "rubber" inserts to allow you to make adjustments without messing with webbing keeper hardware. I also like his
hole and slot arrangements better than most. His plate for singles give a flatter/lower profile than most, also. Tobin is fantastic at responding to inquiries and emails.
I weigh (sadly) 206lbs. I just returned from the S. Carribean using my S.S. backplate and about six lbs. of lead on an XS scuba pocket belt. (w/an AL 80).
Here, I use a single XS pocket on my camband for a 5lb. trim weight. TSandM recommended that to me and it's been great.
Try as many wings as you can before buying. I lean towards more lift than less within
reason for surface swim in big swell/chop in a 55 yr. old body. I'm using an Oxy 70 lb. double inflator with doubles and depending on which camp I'm speaking with or diving with I get "varied" positive/negative comments concerning the lift. It's pretty streamlined-only a tad larger than an Apex 60 and much smaller than a Dive Rite Classic so I've been very happy so far. There's a difference (at least for me) between lift needed for an ascent and lift "appreciated" in a rough windy surface swim or wait for a crowded dive boat ladder climb while assisting a buddy.
I'd encourage you to try wings in fairly windy/choppy conditions to evaluate how much lift you are comfortable with.
Isn't the trim ease with BP/Wing great? I'll never go back to a jacket.