Commuting - Cobblestone city use Jamis Allegro or Trek 4400

Hi, this is my first post here.
I live in Buenos Aires, Argentina and we have a mix of street surface conditions here which make choosing a new city bike rather difficult.
I own two bikes and have biked this city for several years: a GT backwoods with no suspension and a old Shimano 105 equipped-no-brand road bike. I have Michelin city tires on the mountain bike and it is agile and quick but uncomfortable. Cobblestone streets are a pain on either bike if the tires are properly pumped.
I love going out on the road bike because it feels so light and fast, and believe it or not, I am more comfortable on it than the GT. I think it's the hand positions I get on the drop bars.

I have decided to sell both bikes and get a new one. I've looked around a lot and have come across two similarly priced yet very opposite options. There are not as many options here as you may get elsewhere and I'm ashamed to tell you how much we pay for bikes here. But these two seem to at least approach the suggested retail price in the US.

Jamis Allegro 1 US$720
Trek 4400 US$690

I like the speed and lightness of the Jamis but I'm concerned with:
1) the lack of suspension for cobblestone and pot holes.
2) the flat bar which is still very similar to a mountain bike
3) the quality of the drive train components (Sora derailleur vs Deore on the Trek)
4) the availability and cost of spare parts and extras which are more abundant for mountain bikes
5) the robustness of structural components such as frame, wheels, hubs etc.

I would have to add the cost of semi-slick tires to the Trek which would put both options at a very similar price point.

I know neither will be the perfect do-everything bike, but I'll be buying only one for now and I'm tending towards the Jamis.
Which option do you think will give me a better bike for the money?
Is that Sora transmission any good?
Are the wheels on the Jamis as sturdy as the Bontragers on the Trek?

Thank you for reading, sorry for being so long winded.
Christian.

I'm sorry I can't address your question directly, as I have no experience with the trek. However, I can say that the Jamis Allegro 1 has been a very reliable bike for me. The Sora is heavy and a little clunky, but totally dependable.

Can you get the Allegro 1x? similar build, but with a suspension fork.

Hmm.. why would it cost more to ship from China to Argentina than from China to the US? weird.

Thank you for your reply. Sora is clunky but reliable is some information at least. I wonder if I'll feel a difference with the old Shimano 105 I have on my road bike.
As to prices; we have huge import taxes here and a smaller scale economy. Bikes may even be imported from the US even if they were originally made in China.
Oh, and, I can not get the Allegro 1x here. I have seen a Jamis Coda at another shop for quite a bit more money. Go figure. That's why I think the Allegro I found is rather well priced here.

The prices you list are not particularly high. Jamis is a great bike. By all accounts Sora functions very well, difficult to compare with this or that.

The only other comment I've to make is to recommend that you look at the Codas.
I'm biased towards "steel" bikes. This makes Jamis unique. Your lucky to have a dealer near you. Ant of the choices sighted are good ones.
Vos !!

The 105 shifts a little better than the Sora, but not much. I never really noticed a huge difference in shifting until I made the jump from 105 to Ultegra. I don't think you will notice any difference in the Deore vs the Sora. Deore is about the same level of MTB components as the Sora is in the Road components.

old and new; I'll check out the Coda at this other shop, but at over US$800 I will find it hard to justify against the Allegro.

bergim: thanks for the aprox comparison of Sora vs Deore.

I ride cobbles using 700c and 26", no suspension. I find that 1.9"slicks are much easier going than 700cx32mm.

old and new; I'll check out the Coda at this other shop, but at over US$800 I will find it hard to justify against the Allegro.

bergim: thanks for the aprox comparison of Sora vs Deore.

They make one for 6 also and another(s) above that as well