Just want to know if the Seidos battery is worth the price.

Particularly the one that gives 25% more energy

I ordered mine last year in December and am still waiting for it.

If I get it this year perhaps I will write something about it.

I dont have it but I've herd great reviews about it, its awesome cuz its the same size as the OEM battery. Also it will take a few cycles of charge/discharge to get its full capacity.

Well I can't say about the OEM-sized one but the extended battery (and replacement battery door) are simply fantastic. I charge my phone about every 4-5 days now (with fairly heavy daily use). If you have to retain the existing form factor, I'd say it's worth it. But if you can stand for a little more size coming out the back, I'd get the extended battery dude.