We are starting to look at WMS solutions for our warehouse and I was wondering if anyone has a strong preference or suggestions? I've used NetSuite's own offering in the past, but also want to explore other options.

Other options to look into - RF-Smart and CloudWMS

Depending on how complex your processes are, you could go with JASCI as well, they have apps for everything and users can customize things according to their needs no need for huge development @Vinícius Simões

WAERLinx