if you are ok with third party gundam kits , you can try to build the daban 8819 (jagd doga) 8823( quess custom) i think its better than the RE its basically a MG (based on the sazabi and geara doga MG)
I have both versions of the jagd doga. I really love how it looks, and the build was decent for a psudo kitbash of several mg frames. Definitely better than the re100
I have the Quess Air Jagd Doga RE100 (PBandai). I got confused with the "additional" instructions for the Unicorn Era Jagd Doga. Like it has the some of the additional parts but you need the Unicorn Doga and take parts from it. Confused me at first but it is nice to know that I have the possibility. Now I have two REs. Quess Air Jagd Doga and Nightengale. Both are super huge MS and I see why they went the RE route over the MG route. Yes they were fun but I believe it would have taken "fun" away if they were MG. But great review!