Trees

I've only used two nectar collectors, both from the Nectar Collector brand. One analog, one electronic. Definitely preferred the analog for the reasons you're stating - the E rig just didn't get hot enough to take those big dabs.

Cleaning doesn't need to be a tedious task by any means, keep a bin of Q tips and ISO nearby to where you smoke and hit the tip with a bit after every hit. Quick ISO swab and then dry with the other end, the rest of the ISO gets evaporated when you heat it. Prefer titanium tips, as they're less likely to crack from being heated while damp. YMMV but this is how I've kept my dab rigs and nectar collectors clean for a while now

Have you tried a dynavap with induction heater for concentrates? The inspire wand induction Heatr comes with its own cups and bangers but dynavap is better in it

If you really want to take bigger dabs, a rig may be worth considering. In my experience nectar collectors are extremely inefficient. It's also hard to pack enough thermal mass in there to properly vaporize a large hit.

Using a tronian gammatron to fairly great success

Like… robot bees…?