Jeff,
The only 7-round speed loaders are HKS available for about $6 to $7 in most shops (I just threw the last of mine out--good ridance), the Maxfire for about $10 for a pack of 2 at Midway or Dillon and SL Variants for about $30 last time I checked.
Just did a quick check and found Dillon no longer carries the SL Variant. May not be in production?
Personally, I prefer moonclips; cheaper, lighter, smaller, simpler and the choice of competition shooters. For the standard 686+ you would need to have one of the vendors listed by TK Custom at moonclips.com machine the cylinder face. With the conversion you can shoot individual rounds, load with a speedloader or use moonclips with no problems.