The last time I tried these Stiga blades was over 30 years ago. Quite flexible and quite heavily vibrating compared to other blades but they are good blades nonetheless if one likes that.
The V14 Pro is quite the opposite: it's a true Off blade, even Off+ when you get one weighing over 90g. Stiff, very few/quite minimal vibrations, quite sharp feeling which I like. It's definitely a good blade even more so considering its price and built quality but requires good technique and much practice. Not a blade that I would recommend as an upgrade from the Stiga Allround.
Some "can't go wrong" blades that are not over budget:
- Yasaka Sweden Extra, YSE, All+ to lower Off-: flexible, fast enough (Ma Lin supposedly played this blade before switching to the faster Ma Lin Extra Offensive).
- Butterfly Primorac or a light, 85g or less, Butterfly Korbel (European versions, JP versions are more expensive)
- Donic Persson Powerplay, PPP, Off- to Off: this was my main blade back in the days. Stiffer and sharper feeling than YSE or the Stiga blades. Don't get the Senso versions with hollow handles unless you want a quite head heavy blade. Weight: less than 90g which should be around Off-.
- Cornilleau Hinotec All+: not widely known but great built quality and feeling (assuming that the All+ is not that different to my Hinotec Off-).
- Tibhar Lebesson/Samsonov Alpha (same blade but different handles): depending on weight ( from below 80g to 87g and more), All to Off-, harder feeling than e.g. YSE. In depth review
https://ttgearlab.wordpress.com/2017/02/06/review-tibhar-e-lebesson/
If you have the chance to try these blades before buying one use it: their handles, weight distribution (head heavy vs handle heavy) and feeling differ quite noticeable. 85g is a good target weight (PPP 90g because is does not have a hollow handle).