I'm confused because both of the variants have an pros and cons...

I've tried both variants multiple times and both seem to work pretty well. So what should I purchase after a won pistol round? And can you give me the reasons for it? Or is it very depending on map and range I'm at?

edit: I read through all the comments. I've come to the conclusion that I'll stop the trolling buys of mine with the vandals/phantoms in 2nd rounds. I'll now instead go for full armor + spectre because of the full armor advantage and the not so high risk of losing the spectre.

Before I almost always bought vandal + half armor. When I didn't survive the round or even gifted the vandal in 2nd round to the enemy with in the worst case full armor, I pretty much threw away so many 2nd rounds in which we should've had an advantage. Thx guys for the many responses. Currently in silver 1. My goal is Gold.