Actually SureGrip plates are fairly sturdy. I’ve been skating on them for 5 years now and they hold up under my 255 pound body just fine. I would recommend the double action truck models over the single action though. The single action have a thin nylon washer between the head of the kingpin bolt and the bottom of the truck. The washer wears out fairly quickly if you do a lot of distance skating and you have to take the whole truck apart to replace the washer. The double action trucks (like the Classic) work fine.
The Classic plates sell for around $120 to $140 US a pair.