Also curious about this, going to tag /u/MeatyJonesTheRapper to see if he's got any thoughts on it.
In a post asking about a 100W COB/Quantum board, he said that it'd be too much light for a bucket build. Then the ChilLED he recommended is a 64W bulb according to this report, but he still recommends using it at only 25-50% capacity.
Therefore, what I'd determine is that you only really need a 16-32W bulb for a bucket build, which would mean the ones you've linked should be fine. Link for 24W and link for 36W, but I'd really like to get his thoughts on it since he seems really well-versed in all of this stuff whereas I'm just trying to draw conclusions from what I'm finding.
I'm also a little confused on the driver vs power supply thing. I'm wondering if there's a pre-assembled version of these higher quality lights available in the lower wattage that a bucket grower would need?
EDIT: Also curious about this Canagrow 35W LED which appears to be pretty much made for this application, if you have any thoughts.
EDIT 2: I found a pretty insane review of the Canagrow which has increased my confidence in the little 35W lightbulb, enough so that I'll probably be throwing that in my build whenever I get around to it.
Also curious about this, I believe this Canagrow 35W option uses those same bridgelux drivers, and if they're anywhere near as good as the ones he's listed I'd sooner just go with those for a bucket build, as they're waaaay cheaper and seemingly more than enough if you have to turn the other ones down to 25% anyways.
Canagrow makes an amazing 35 watt grow bulb with a little built in fan. Outperforms my Sansi and GE full spectrum bulbs- more PPFD light at a greater distance.