Hey Jeremiah .... while George is certainly the Meister of 914's .... I have a different take on this.
The different shocks give different rides & everybody's tastes are different - especially in balancing ride & handling on a 914. However - that said, a 914 is NEVER going to be a cushy soft riding commuter car - it's a sports car - a damn good handling one at that - which will always transmit more of the road to a driver's seat! If you're looking for cush, then you've got the wrong car!
So go out & test drive other 914 owners' susp. set-ups first with the various shocks, so you can get a feel for them & pick one which suits your tastes (there are quite a few in your area on here). Also, make sure to use street rated bushings, etc. on any other suspension bits which you replace, as that will enhance the harsh ride even more if you use the race level parts out there.
As someone with 130,000+ miles over 10 years all over SoCal & the Southweth, up to BC Canada, etc., & around town as my DD - I'd recommend the "street flavor" of either the Bilsteins or Konis, as both are better shocks, and the Bilsteins will probably never need replacing again. In 1980 I'd put street Koni reds on all 4 corners to replace the OE stock Boges when they wore out, to have a bit more handling performance. However, I'll probably do street Bilsteins next time around, as they're supposed to be the best around.
BTW - I eventually also got a BMW 325e for the "cush ride" & back seat for the kids, on my wife's insistence!