I'd never buy an Echo 1 over a Marui, let alone if the Marui is cheaper.
OK so you go and buy the Marui......You want it to shoot 400 so you buy the spring, break it open, re-shim it, put it back together. How long does it take? Now you want to play it in a CQB match but it's too hot. So lets break it down again and undo everything you just did. How long does that take? Are you sure you have it shimmed right?
I count my time as money. If I don't have the time to do it I have to pay to get it done.
Or you buy the TM and another "complete lower" how much does that cost? I'm sure if it's used you will go ahead and open it up and check it out. Again time and money.... If you have the parts, Knowledge and time.......then OK. If not how much will it cost?
I for one like the idea of spending 2 min and changing out to the GB of my choice. Do I do it often?
HELL YES I DO. That’s why I love my G3's. If I want to play my SBD at AZCQB then I change out my lower in about a min and I'm done.
Don't get me wrong, I'm not saying it's for everyone but I LOVE the idea. I have one load out that covers of all my guns. Why not have one gun to cover all of your load out?
Plus if you’re in the field and your gun dies you have a backup that you can carry in your pocket or your pack.
Last point, when was the last time you saw a TM MP5 “RAS” for under $300.00??? I’m looking now and I don’t see one. Ehobbyasia 302.00 + shipping, Trinity 337.00 + shipping and Precision Airsoft 319.00 + shipping…….. Now go and price a second NEW lower. Thats what about 120.00 + shipping for an ICS. So now your 285.00 + shipping (Gotta be equal) is now at least 420.00 + shipping (on 2 items).
All of this stuff is subjective. Bottom line, if you like it, it will work for you and it’s in your price range then buy it. I know many people that have Echo guns, including my son. We like them and have never had an issue with them. We have 2 TM’s (G3 SAS, G3 SBD), a CA (M41), an Echo 1 (M4) and a Cybergun (MP40).
I think Ron at GB has your MP5 if you want to look at one up close. If I was still running my MP5 load out I would have one.