As far as I can tell, none of those bulbs are available in the UK/Ireland, at least not the main stores such as Amazon.
Based on my experience - buy one that resembles a normal light bulb, i.e. similar to the bulb on right in the following diagram where the translucent (light emitting area) is wider than the heat sink:
LED bulbs that resemble the left diagram emit very little light towards the base. So in a table lamp with the base side down, this means most of the light goes up, not very useful when trying to read a book. The same goes with a ceiling light with the base side down - Very little light reflects off the ceiling, which means harsh shadows, as most experienced photographers are familiar with, i.e. bounce flash vs. head-on flash.
Avoid LEDs that look like a corn cob - The majority are poorly made, have terrible colour rendering (like some CFLs) and some are even an electronic shock / fire hazard.
As for those Wi-Fi, smart, etc. bulbs, well,... they'll probably never repay for themselves, at least not in the next 10 years or so of typical usage.