Hello Jimmy Lim,
Thank you for choosing Telerik components for your projects !
As you may know the RadControls suite for WinForms suite utilizes the TPF
framework . This means that even when you choose WinForms for your development platform , all Telerik winforms controls will give you the opportunity to still provide a modern WPF -like visual appearance with powerful theming, styling , animations and visual effects.
We are constantly improving both our Winforms and WPF lines and both the WPF and the Winforms teams will be happy to provide you assistance, guidance and support.
The WPF platform is modern and it is gaining more and more online community presence while the Winforms is classic, stable and time-proven.
On your question - Yes WPF will become more powerful in the future as Microsoft continues to invest in future versions. And speaking of Telerik - our plans are to keep both suites (WPF and Winforms) at the cutting edge.
We maintain and improve the Winforms line targeting developers with long experience in this classic platform. As you have mentioned you are a starter - I believe choosing WPF will be the better choice /in my personal opinion).
Either way you can always count on us if at certain time of point you need to switch platforms and migrate your projects. Our developers and support will be glad to make the process smooth and painless for you.
the Telerik team