Just wondering what people recommend?

And if electric how is it usually wired?

I wired mine to the ballast resistor

and how do you find running a weber vs stock in terms of smoothness etc?

Tuned right it delivers more power but fuel economy goes down. I think it's much better than stock if you want more power.

I personally think its more reliable because its a newer carb, but i think a new Hitachi stock carb would be reliable too.

I found my Weber 32/36 to be very smooth after normal adjustment. Flexibility was so-so, it was jerky when first opening the throttle, and I could never tune that out

Yes, definitely more power when revved over 5,000 RPM

And sounded more aggressive at all speeds because of the open air filter

I'm wondering if I just get a stock a15 carb for now and eventually rebuild a weber and then compare

Sure that's one way to do it. I'd fit an open air filter to the Hitachi, drive it around, get used to the sound ... then later fit the Weber and compare it

Hitachi with open filter

Unless you already have the carby, I recommend the manual choke. The best way to provide power to the electrickery is the wire for the idle cut off solenoid. Unfortunately you can't convert the electric ones other to manual, as the mounting points aren't there. There's also a vacuum source that has to be plugged if you remove the electric choke, usually with a small ball bearing. If you can get the carby to work properly on the idle circuit, the weber carby is very economical. Get into the mains or the secondary's too much & economy suffers.
If your A15 is stock, stick with the standard carby, until your sure you need the weber. As long as the stock carby is in good condition, it's pretty good, & there are so many tuning options on the weber, it's easy to get it wrong.

Thank B310gx. I have no carby at this time.. I have the inlet head and block but no carb hence trying to decide :)