Curses you for mentioning X Products. I've been see sawing between theirs and the Magpul one for the ARs. Now I might have to acquire a Glock version from them lol.
Honestly with the political climate the way it has been you never know when someone will tell me I "am not allowed" to have something. We all work hard for our hard earned money and should be able to purchase any size capacity of magazine we choose. So while not always the most practical magazine choice I've been buying higher capacity ammo feeding devices while I'm "still allowed" before someone tells me otherwise.

Also while they are still affordable I might add.
I had no practical need for the drum other than I just wanted one and I agree I prefer using my 33 rounders with my Sub2k. The drum does add some considerable weight and its a bulkier profile. Gets looks at the range though especially hanging on the bottom on my G19

Because of the way its designed loading the drum to full capacity is uber easy compared to trying to squeeze in those last rounds into the extended happy sticks so theres one positive. Sadly doesn't lock back on a Glock slide (mute point in a Sub2k) so there ya go.
If its not worth spending 50 bucks on it for you then utilize that money towards a few more extended sticks or some boxes of ammo.
YMMV as usual.