To answer the subjective question: I hate, hate, hate right angle RCA connectors. They barely make sense on top panel gear, assuming the jacks are well spaced. Jacks on the back panel (especially vintage gear with tightly packed jacks) are where the problems really start. When the jacks are too close together, you end up having to insert your two cables with strange angles, angles that might block the next jack over. And once you have that plug placed where it physically can go, the cable has to go straight out from there. Is it pointing towards the next piece of gear in the chain...? Usually not.
Cables extending from straight plugs, on the other hand, stick straight up or out, allowing the cable to go where it needs to with a gentle bend in whatever angle and direction is needed (not whatever angle is possible). I do like the straight version of those Switchcraft plugs; every cable in my system is using those with Mogami 2549.