Softbox for speedlite

Hi, Any of the Ebay Ezy-fold copies can work well but you are right to think ahead.

Light/IR control & triggering (i.e. Canon Wireless Light/IR type) can work well but the light path from your master/controller device to the front/top of your 430ExII's slave body (i.e. the nearly black window) whether direct or bounced, has to be easy. For instance, from my 7D, when I was using its pop-up built-in Controller, it might give me trouble when in portrait orientation (shutter button Up). That way round, control & triggering were slightly less reliable to a soft-box on camera right. If you plan on doing a lot of this, consider Radio triggers (simple M or TTL style).

I use 2 Ebay Ezyfold S'boxes and I have changed out the little ball&socket adaptors that came with them - they just weren't strong enough for the job. It took a little DIY etc. If you search Ebay carefully you may be able to source types with a stronger angle adjusting adaptor. Last time I checked, 'Neewer' had a good one. (Edit: Yes, your third link would be my choice - though their pics showing a PW TTL trigger under a speedlite demonstrate a problem - the speedlite head needs to be inside the S'box, not an inch behind, as shown.) Good luck.