Both can be fake, depending on your source. Powder is generally cheaper dose for dose, but very easy to overdose. Usually sold (pretending to be) uncut and thus involves handling like min 50mg pure BZD. You can't weigh 1 or 2mg without a lab balance which is different than these .001g ones from eBay and costs some orders or magnitude more. Which is the reason people buy the pills even when they cost 3-5x the powder.
If you select powder, use volumetric dosing - these blotters some sell can be made yourself with some accurate work, or just use the resulting drops sublingually/orally/as nasal spray.
It's longer ago since I had some eti; lovely Switzerland pushed a blanket ban. Remember it as equally anxiolytic to lorazepam but less sedative. It's a decent med and apparently some like it too much, like possible with all benzos but would say overall it's one of these usable for the shorter-term treatment of anxiety, stress, etc. If you look for something strong, you might be better off with e.g. not flunitrozolam (this one is mad. 'Skipped' through at least 2 days straight.)