I haven't been using the solution for that long. Basically it's just this year. I've been tinkering with it since March.

We have been using Juniper vSRX for four years.

I have been using this solution for ten years. 

I have been using the product for more than ten years. 

I've used it for the last four years.

I am working on the solution currently for three of my clients.

We have been using the solution for over two years and are currently using an older version.

I have been using the solution for two years.

I have been using Juniper vSRX version 13 as a customer for the last five years.

I have been using Juniper vSRX for six months.

We have been using this solution for about nine years, and it is deployed on-premises. We are using version SRX 500.

I have been working with the product for two to three years. 

I've been using this solution for around 11 years.

We've been using the solution for a couple of years.

Our organization has been using the solution for about three and a half years.

I have been using Juniper vSRX for four years.

This is a product that I have been using it ever since it was released.

I have been working with Juniper for more than two years.

The versions that I have worked with are the SRX 550, 3600 and 5800.

I have been using this solution for more than two years. 

I have been working with Juniper vSRX for three years.

We have used the Juniper vSRX firewalls for two or three years.

I have been using Juniper vSRX for a couple of years now.