One of the biggest things you could do right now, if you want to see an immediate improvement in your damage count is get to the 125 str boost. Fact is though, with a lab rat, that probably won't be happening and you definitely have no control over whether or not it does happen.
Personally, I prefer the scuzzys comb. The most common shield I know of, even though I firmly believe there are better alternatives is the
leaf shield. My opinion on why is that it's merely been out the longest, and people are used to suggesting it. People say it kills the comb, but take a closer look at those icons. The leaf shield takes three physical out of a comb, meaning that head to head, the person with the comb wins, because they deal 7 icons, while the person with the leaf shield effectively deals 3. This is of course, assuming even boosts.
The
patched magic hat does beat the comb in a head to head match, but I only know of myself, and one friend of mine who actually use it, and have never seen it appear in a quick fight. Another obstacle to the comb is the extremely common
Scarab ring which blocks three physical, leaving them with a 9 iconer and you with a 7.
For the RSB, the main problem is the (relatively speaking)
Golden Compass which clips 2.6 dark off, while dealing a full 9 icons. this leaves your opponent dealing 11.6 icons, while you deal 7.4. This may seem like a better trade off than when comparing yourself to a leaf shield with scuzzys, but it really isn't, because now, in overall icon count, you're losing. Another thing to consider is that it isn't at all uncommon to run into DUAL compasses, leaving you with even less of a chance in the fight, if you were to depend upon your RSB.
Now the thing you have to consider, is which is more common at your level: the Compass, which hangs around as a backup weapon once in a while, or the scarab ring/PMH combo, which I believe either was never used (in the case of the hat) or has been outgrown for quite some time (in the case of the ring). There is also the fact to consider that, without inflation, Scuzzys goes for almost half the price of Ramtors.
Good luck with whatever choice you happen to make. Hope I was helpful

~phyre