I have used both Weezle and Weezle+ while diving in around 5C water for a while with TLS-300 and cLX-450 (i.e. both were trilam) living in Europe.

Dive time usually around ~1 hour with low exertion level when in Belgium freshwater sites. Duration was about twice longer when diving caves in France in around 11C with medium exertion level, except during deco.

Personally, I found the Weezle+ a lot more comfortable for me as I get cold easy (i.e. very thin layer of "bioprene"). It was also more comfortable on land with the drysuit off as well since the thicker layer protects better from the wind.

I still have the Weezle which I still use diving dry in UAE during the Winter months in the ocean ranging from 17-20C depending on depth.

I also used the DUI 400g which is comparable to the Weezle+. When diving caves, I like to keep the suit tighter than normal so found the 400g insulates better - whereas Weezle+ more comfortable when diving OW since there is more of an air layer to keep the Weezle fluffed up.

If I was to move back to coldwater diving tomorrow, I would personally buy either the 400g or Weezle+, with the preference on the Weezle+ due to comfort.