Just to update. I ended up talking to m4led.com about what I needed. They were very helpful and I purchased 10 bulbs to try them out. I bought some flat type for celing fixtures and they seem to be okay, lum wise. I also tried two different 921/194 bulbs where I had limited space between the bulbs. The Samsung 5650 chips are much brighter than the 5050 chips and put out same light in bulb same size as my old ones. The reading light 1383 bulb fits tight but seems to be ok.
There bulbs were mostly from $10-15 but I had them in 4 days and they seem to be fine so far after a couple of hrs of testing. I tried to get from Amazon, but they did not provide enough info on the specs to make sure what I was getting when I didn't know much about it. Same with ebay or a couple of companies from China. They may be fine for $2-6 but I didn't have time to wait for shipping and/or not know if they would work. Should have done this 3 mos ago when I had lots of time before upcoming trip.