Note: Let's not turn this into a whizzing contest guys. These are my opinions.
I also looked at DA and MVVS/Evolution 45. I have no doubt that the DA (I've made offers on two this week here) is a fine product with some of the finest customer service you could ask for.
Think about a Taurus TS52. I like the idea of a double web crank and a bell mount included (no standoffs required). Do a search on the internet and
see if you can find one bad comment and then decide. I went through the same process and have one on order. Taurus had a price increase in December but it is still a good value.
Here's the process I went through...
MVVS (Same as Horizon's Evolution 45GX): Not much history
DA: Most history of any late model 50cc. Mostly good reports, but the one I see at our field is still not dialed in and I have heard about the mid-rangle burble/deadstick issue a lot as well. Granted, these may be user related problems and DA will back what they sell. I
personally don't like 2 or 3 inch standoffs.
Brison: Good motor! I owned a 2.4, but there has been some changes at Brison...
Fox & FPE: I don't know. To me they look like a Brison copy.
BME: I hate beam mounts on a 50cc motor.
ZDZ: Good for some, not so good for others. I had a 40. Do a search....
3W: I seriously thought about the new 55! I have not heard any user reports yet and all I could get from AA was cannister data.
Here's one of the Taurus threads
http://www.rcuniverse.com/forum/m_35...tm.htm#3570123