An Ahab Mod.............is the Japanese half moon grinds of the nib, that take the Ahab from a 'very hard' semi-flex "Flex" nib two steps down to real Superflex....the first stage of superflex, Easy Full Flex. Then it is a fun nib.
Get the Ahab or Conrad....use as is for a couple of days. To get use to use of a superflex nib, even if it is hard....'semi-flex hard', it still flexes in the superflex range.
Then take a Dremil or a round Swiss File and file the half moons into the side of the nib. Do look up 'Ahab Mod', to see exactly how much and where to make the half moons.
Then the nib flexes much easier and is then fun........but you will have experience to see and feel it.
I have no problems....and the feed is ebonite....which is more important than if the body is what ever.
Ebonite feeds once saturated holds and controls the flow of ink better than untreated plastic.
We have a member who was a Lamy Engineer and developed a chemical treatment that roughed up plastic to give it the same characteristics of sawn ebonite. Roughness.
Part of the 'fun' of an Ahab or perhaps a Conrad is you get to learn all about feeds.....and how to make them faster....with an X-ACTO Knife. (Spare feeds are cheap if you screw up by digging too deep...or chop off too many combs and make your feed too fast.) The idea is to learn how to adjust your feed to your nib and ink.
Which paper you use will be important too, but that is for another thread, by someone who knows.
If you look at very old vintage feeds, there was little to no buffering, with wide and easy expending superflex nibs, fast ink flow was wanted. As stiffer nibs came in so did buffering, in a stiffer nib didn't deliver as much ink, so needed to be buffered not to do so.
On the Ahab, You can dig the feed channels deeper, to make it faster. Then you can chop off combs/rills either back or front to make it faster. One should go to the many Ahab feed modification threads, to find out if you should start with the back or the front when making it faster.
So you saw off a comb....check, saw off another, check. Sooner or later you will end up with a feed that is fast for a good fun to use Ahab Mod Easy Full Flex superflex nib. (Conrad too.)
(Mine worked good so I didn't have to dig a deeper channel or chop off combs.)
Buying and modifying a Ahab will teach you all you will need to know about feeds...............buying a 100% ready to go won't teach you anything.
Which ink could also make a difference. Thicker dry Pelikan 4001 or thinner wet Japanese inks....that I don't know enough to talk about.
You will need a book to teach you how to draw the letters....your italic book can be of help with that. I found it so....one needs to know how to push and pull a nib to form the letter form one wants.