Test drive both of them!

The SRT-4 also uses a Mitsu Turbo
( I want to say TD05H-16G, not 100% sure ). The right car for you is exactcly that, the right car for you .
As far as personal opinion goes, WRX hands down. I do not like FWD for one, I'm not a big Dodge fan in general, and I like the
EJ-20 flat motor with AWD.
Here's some comparison #'s (SCC tests)
Srt-4 223WHP
WRX 189WHP

SRt-4 256 lb/ft
WRX 199lb/ft

0-60
Srt-4 5.8 sec
WRX 5.2 sec

1/4 mi
Srt-4 14.0 @100.5
WRX 14.6 @91.8

Braking 60-0
Srt-4 117 ft.
WRX 115ft

I'm sure you know about the two cars in general, I think the
EJ-20 is stout from the factory, and if upgraded correctly, can be a reliable monster. The SRT-4, I've read the article on the teardown of the engine, and heard all good things, over engeneered everything. Strong crank (Mopar Drag uses stock one), Piston cooling oil squirters, strong rods, it's basically a re-done PTcruiser 2.4L with the turbo settup.
They both have good aftermarket suppourt.
I could be here all day arguing both sides.