docs: Update readme with comparison table

Author: NeoScript

README.md

@@ -1,10 +1,20 @@
 # Pub/Sub Emulator Lite
 
+<!--toc:start-->
+- [Pub/Sub Emulator Lite](#pubsub-emulator-lite)
+  - [Usage](#usage)
+    - [docker compose](#docker-compose)
+    - [docker run](#docker-run)
+    - [Connecting](#connecting)
+  - [Comparison](#comparison)
+<!--toc:end-->
+
 A minified version of the google cloud pub/sub emulator
 
 ## Usage
 
 ### docker compose
+
 ```
 services:
   pse-lite:
@@ -14,12 +24,31 @@ services:
 ```
 
 ### docker run
+
 Just pull the image and run it via `docker run`
 
 `docker run -p 8090:8090 ghcr.io/neoscript/pubsub-emulator-lite:latest`
 
 ### Connecting
+
 Access it via `http://localhost:8090/`
 
 > [!NOTE]
-> You can set your own port forwarding if you want to expose the emulator via a different port.
+> You can set your own port forwarding rules
+> if you want to expose the emulator via a different port.
+
+## Comparison
+
+Comparing the size of alternative solutions.
+> [!NOTE]
+> Some of the other solutions have handy tooling built in.
+> Such as reading a configuration file and pre-building topics/subscriptions.
+> This image does not currently have that capability, perhaps soon.
+
+| image                                            | version    | image_id      | created       | size    |
+|------------------------------------------------- |----------- |-------------- |-------------- |-------- |
+| thekevjames/gcloud-pubsub-emulator               | latest     | fba9232f5582  | 7 hours ago   | 1.12GB  |
+| gcr.io/google.com/cloudsdktool/google-cloud-cli  | emulators  | 420d45e98937  | 9 hours ago   | 1.06GB  |
+| ghcr.io/neoscript/pubsub-emulator-lite           | latest     | e5efb4f71c82  | 16 hours ago  | 921MB   |
+| messagebird/gcloud-pubsub-emulator               | latest     | b690195d      | 5 years ago   | 1.36GB  |
+:Comparison done: 2025-09-03T20:17:39+00:00