If you browse about other sites that have anything to do with owner-riders of two strokes, then the general consensus appears to be that the Lectron is still a very desirable carburettor as some still love 'em.
The fact that the fundamental concept has been emulated/modified & is now available from another company (see:
https://technologyelevated.com/smartcarb-vs-lectron/) gives some recognition of the main man responsible for carburettor advancement decades ago with the introduction of flat slide 'guillotine' types that also included the Magnum range.
Personally, I had faith in the concept many years ago in racing whilst all around me thought that the Amal concentric Mk II to be the pinnacle of two stroke carburettors.
However, nowadays it is virtually mandatory for the best tuned two stroke engines to have the kind of slide arrangement that Lectron & Magnum pioneered. Dell'Orto, Keihin & Mikuni had to take these USA carburettors seriously & change their own range.
The long & the short of it is that if you can acquire the Lectron @ an advantageous price, go for it, as long as you feel capable to learn about the characteristics. These days with t'internet, it is easy to glean good information to achieve good set-ups.
If that is not for 'you' then a far less ambitious choice would be a Keihin two stroke specific carburettor. After all, they are OEM equipment on major manufacturer two stroke engines.
If you really want to box clever, spend little & have a carburettor of Keihin design produced under license, then the PWK's are a superb product.
I have set up three varying configuration engines with them & the manner in which the settings were achieved was intuitional, easy & an absolute delight as they are so air filter friendly. That said, I still have a 34 mm Magnum 'waiting in the wings' because 'back in the day' I struggled to acquire pilot jets & had to resort to reducing the orifice by soldering! Who knew then that they used Mikuni pilots?
I hope my own, admittedly opinionated, response helps you with your decision