Please look for Hero Xtreme, Xtreme Sports, Suzuki Gixxer, Yamaha FZ V1 and if you are in the 20's and 30's, Take a look at Apache RTR series.
Dont buy a Honda Unicorn now, quality is worser than the Pulsars.
Trust me, I have the first gen Unicorn, it is the most smoothest Unicorn ever made. After the updates, I never liked it.
I have no experience with the Unicorn 160, so I didnt suggest you.
Xtreme and Xtreme sports are too good, awesome indeed, best handling with comfy ergos, same Honda engine with true quality parts. The true no niggle 150 cc bike.
Gixxer is best in terms of dynamics and engine smoothness. The engine is the most punchy of the lot (next to RTR).
FZ V1, as we all know, bold and best in looks, punchy engine but struggles at top end.
I didnt suggest V2, my friend has recently spent some huge costs on FI system, something went wrong and the bike didnt even start. Looks like the FI was not supplying fuel.
Apache, is the bike of the lot that can be ridden in track. Most punchiest engine, most vibey engine, most fuel drinker. Very sporty, low set clipons and rear set foot pegs wont suit with uncles (above age 35) If you are in your 20s or 30s, you can be having real fun with this bike.
Pulsar AS 150 is also nice, but since you didnt wanted a Bajaj, I have not suggested it.
But it is truly one new segment in the 150cc class, a great tourer as well as a good city commuter.