I vote for the Ajas version, but it's a PAIN to find.
I'll try to place some comparisons with the RG release tomorrow, just so to have some facts on hands...

Edit: here we are...
Ripping Gods:
MKV (XviD), 576x432 (4:3), VFR (~1150 kbps), Jap + Eng 2.0 Vorbis (~115 kbps), VobSub + SRT (including sign tracks for Eng dub)
(has Eng dub director's commentary for last ep)
3D OVA: MKV (XviD), 640x352 (16:9), VFR (1396 kbps), Jap + Eng 2.0 Vorbis (~115 kbps), VobSub + SRT (including sign tracks for Eng dub)
AJAS:
Ep 1 --> MKV (DivX5), 640x480 (4:3), 29.97 fps (1400 kbps), Jap 2.0 AC3 (224 kbps) + Eng 2.0 MP3 VBR (~131 kbps), SRT (no signs track)
Eps 2-4 --> MKV (H264), 704x464 (anam 4:3), 29.97 fps (~1000 kbps), Jap 2.0 AC3 (224 kbps) + Eng 2.0 MP3 CBR (~85 kbps), SRT (no signs track)
3D OVA: MKV (H264), 704x352 (16:9?), 29.97 fps (1000 kbps), Jap MP3 CBR (160 kbps) + Eng 2.0 MP3 CBR (64 kbps), SRT (no signs track)
(has Eng dub director's commentary for last ep)
Let's start with a few shots from both episodes 1...

AJAS | RG

AJAS | RG

AJAS | RG
Regarding the signs: I extracted the ones from the first RG episode, and aside from the OP/ED we're talking about 11 "sign instances".