The Tantalus definitely is a fire magnet. But it has 4 hull points, can tank shock, should the need arise, and can deep strike without retrofire jets.
The Reaper is a neat model, but I think it suffers from two severe problems:
1.: One gun syndrome. Basically it's just a beefed up Raider for double the cost. Its s5 small blast and its s7 D3 Haywire look good on paper, but they aren't too reliable to cause damage, at least not better than a run-of-the-mill Ravager.
2.: It's expensive. 60$/45€ for a Raider,some armor plating, a bigger sail, a gun, two blades and some tubing isn't a great deal in my eyes.
The Dark Eldar Flyer(s) aren't much to speak of either.
The old Razorwing isn't sold anymore and is outright bad. At a cost of two ravagers and a load out of a twin-linked dark lance, a twin linked s4 assault 4 splinter cannon and a Terrorfex (an old Codex, rather reliable pinning weapon) it's not aged well.
The Raven isn't much cheaper, offers a non twin linked splinter cannon and no Terrorfex, but it has Vector Dancer and Strafing run. I heard the SC was FAQed to be a modern SC, but that ruins it even more, because it is now totally wasted against vehicles. The Raven also has only 2 hull points.
Both these models are heinously ugly in my opinion. They matched the old Raiders and Reavers, but in a new DE army they are just out of place, especially when the new flyers are better and cheaper.
The Third DE Flyer is a Phoenix bomber, which I only found in IA 11, as a part of the corsair list. So it's not strictly DE, but it's actually worth a look.
It's still a little bit cheaper than two Ravagers, but it brings 6 s5, 6 s6 and 2 s8 AP2 shots and can be kitted out for AI duty with 6 s4 blast, 6 s6 and 4 s6 AP2 shots for just 10pts.
Additionally it gets shrouded, vector dancer and strafing run.
If you're already delving into Eldar/Corsair territory have a look at the Nightwing interceptor. The cheapest of the lot, just a little bit over a single Ravager, a Fast Attack choice and an incredible AA load out with 6 s6 and 2 s8 AP2 lance shots, shrouded and vector dancer it's a real bargain.