Anybody have experience with these? Internets claims an extra 10hp bump to 235, has 225/245 wide rubber and is supposed to have a shorter final drive and interior tidbits.
Interesting, but worth it over a similar generation G35?
I have one

It's a honey to drive. Convertible too, love hitting those country roads. I just put the M3 spoiler lip on today, so I'll have to post some pics.
This.
Plus the car weights ~3300lbs. 235hp is just not enough to really scoot around and have fun. The first time you drive an m3 after a 330 you'll regret not getting one unless you plan on really dumping miles on it.
It'll do 0-60 in 6s, maybe less. It's plenty fast. It also sticks to the road like the tires are made of velcro. The only other car I've driven that handles better is a Porsche Boxster.
I have not heard of any fuel pump problems with the 330i - just the 335i. I have had my 330i for 5 years (I bought it as a 2 year old CPO car with only 13K miles on the clock), and have not really been tracking the market for them, but I think they have held their own in terms of value at least among enthusiasts who are wary of the reliability issues with 335i. They are relatively unusual cars since, as you observe, they only made them for 1 year before releasing the 335i. (I don't know why BMW does this - they did the same thing with the E46.) Overall I do think the E90 chassis is a step up from the E46 in terms of handling, though admittedly the overwhelming majority of my experience driving an E46 has been with my M3.
Issues with the 330i, and e46's in general are you'll need to change the waterpump around 100K miles- they tend to self destruct around that point. Also the VANOS can be problematic, but it's fairly simple to repair if you know your way around a wrench. The relay for the AC fan tends to crap out, but again, an easy fix. Get a 2002 or higher to avoid sub-frame issues from people hooning the car.
The e46 was the last of the BMW "Everything is fixable in the driveway" cars, which is why it's so popular today. They'll last forever if you take care of them, and they're dirty cheap right now.