The GDI Watchtower Artillery

I've not tried the SR Arms. From my understanding, your effective range drops by a whole square, hence reducing the effective range from 3.5 to 2.5 but the artillery is armed with an arm that can grab targets and bring them in closer and do stronger damage. I'm quite conflicted as I have set my defense to start picking up from as far as possible plus bringing in enemies closer faster doesn't really appeal to me.
STATS:
Defense Points Usage:
- 30
- 3.5 - Effective Range
- 5.5 - Maximum Range
- 2.5 - Effective Range
- 4.5 - Maximum Range
- Any Enemy Infantry
- Zone Troopers
- Any Tank (No APC/Pitbull)
- Anti-Tank Aircraft
Upgrade Research Cost:
- Credits: $240,000,000
- Research: 480,000,000
- Credits: $35,000,000
- Research: 70,000,000
The Watchtower Artillery is a pretty good unit but I only use one per base. Fact is, Sniper Teams and MG Nests do as good a job and cost a lot less to upgrade. This is the least expensive of the artillery line up and you shouldn't get too many of them as Snipers are a worthy alternative.