QT9 is a decent eQMS management platform though it is not too tailorable. I have used this in the past and for a company less than 100 people with some strange forward processes, this works quite well - it is more tailored to smaller organisations.
I have not used Green Light Guru, so could not say.
My recommendation on a eQMS software is only two aspects: 1) download or use a demo of the program - but really USE the program. Make sure it does everything you want or need to to do. 2) Determine how much you want to spend on a eQMS - and don't forget the support !
There are many at least a dozen decent ones out there, but they all have their pros and cons and all are at different prices. So like any PDCA process (chuckles) you want to plan well in advance on a system you want. Rather than just trying to pick you - set out your specifications, expectations, and what you want the program to do.