erm...if you get those models, then i don't see in what way will
you be upgrading then....you will more likely be downgrading.
For your budget, it would be quite difficult to get a decent
racquet unless it's second hand. Good yonex racquets would cost at
least 160SGD and more.
You might wanna ask around in forums to see if anyone selling 2nd
hand. Some of them do keep their racquets in very good condition
and change their racquets frequently.
If you want a low-mid range new racquet....you should b prepared to
pay around S$85. Brands include Pro Kennex/Toalson/Hart/Wilson.
Slightly cheaper would be brands like Apacs/Tactic/Proace...around
S$70++ in singapore....