Thanks for the good suggestions! Weight-wise, the FA28 wins hands-down at 6.5oz., but I would need to see some more pics taken with it before deciding on it. I checked pbase.com's database and there aren't that many pics and they vary greatly in IQ--some are very good while others look so fuzzy that they look like they were taken with a cheap film P&S.
Pentax smc P-FA 28mm f/2.8 AL Lens Sample Photos and Specifications
While it's a good bit heavier, the Sigma 30/1.4 looks interesting, as well and the IQ from the pics I've seen is pretty decent. The only other downfall to this one besides the weight is that it's for APS-C sensor cameras only. Of course, I could hang on to my M28/2.8 for the K1000.
The Sigma 28 is also a contender, but again, there's the weight issue. Price-wise, it's not too much more expensive brand new than a FA28, which is a plus and I can use it on the K1000, too.
To answer the question why the FA35 isn't in contention--it's too close to the 43.
This is one of those cases where I wish there was a B&H in Florida that I could go to and actually touch and play with the lenses.
Like I said, this is a ways off, so I'm still open to other suggestions.
Heather