they want to show off or not, got nothing to do with whether ur kid has a reliable stroller what...

My opinion is that there isn't one that fit all sizes. All strollers with pros and cons. Even most expensive range, ie Stokke and Bugaboo have cons being so bulky and takes up space in the car boot. So, choose one which you are more comfortable with and meet your budget.

Eg: if you are travelling alone with your baby most of time, look for a light weight stroller like Combi. You can open and close with one hand. Budget conscious parents can look out for Sweet Cherry or Halford, both are reliable and established in the market.

For me, I'm travelling with my husband and baby most of the time, so I choose Peg Perego which is heavy but sturdy. I like to hang my diaper bag and shopping bags at the handle which can take up to 25 kg even without my baby sitting in the stroller. So, it always depends on how you use the stroller and at what price you are willing to pay for it.

I used to like the idea of combo, however after my baby turned 6 months, he is too heavy to be carried in a carrier. His weight 8 kg plus carrier weight 4-5 kg, really a challenge for me! Also my baby can't use the carrier for long, mostly 18 months. Now I have a separate car seat, Recaro Proride that he can use up to 7 years old or 70 kg, and rear facing up to 40 kg.
Not all strollers are expensive or branded, some are affordable and nice. Stroller is just a product with different market segment like shoes, clothes, cars, etc. It is your choice to wear a Jimmy Choo or Vincci. If want to show off, there are better things to show off 

A few thousands stroller is hardly anything to show off