Black Jesus wrote:Romulan cloaks--considered such a threat to the Federation that Starfleet Intelligence sends a captain to obtain an example.
And can be detected by normal ships sensors whenever it moves, with no modifications required.
Requires a sensor net powered by 20 starships to be detected.
Seventy years after the incident in question.
Federation cloaks--a technology that the Klingons and the Romulans couldn't get to function but is sophisticated enough that the Romulans send a ship to locate a 12 year old example of it, which is later used and functions aboard another ship.
Sixty years after the incident in question, and the Federation couldn't get it to work properly either - or have you forgotten the bit about the thing causing an explosion on the Pegasus, and the crew being unable to shut it down (either because it malfunctioned or because they were dead)?
Klingon cloaks--defeated by a retiring communications officer onboard a ship about to be decommissioned with the potpourri addition of a couple of gas sensors installed, in part, by an octogenarian physician.
And which went undetected while it was sat right under the hull of a ship, had knocked the E-A silly without reply, and was doing the same to the most modern and powerful ship in Starfleet. Moreover, how exactly to you expect any cloaked ship to survive without either venting plasma or radiating through the cloak, given conservation of energy.