I have an A-5 with an RT, Double trigger, expansion chamber, and a Armson stealth barrel.
Strengths:
Its intimidating! If your cornered you just blast them all away.
Weaknesses:
When my CO2 gets low the RT dosn't work as well.
Review:
If you don't have an RT you must get one. Yeah its expensive but its worth every cent. I have been using it for 3 months and so far i havn't had any problems at all. A couple of weeks ago I went to a war and played with the RT and I came out on top but my friends E-grip is pretty impressive.
Conclusion:
This RT is great! Its fun to install and very very intimating if you play with a bunch of newbies!