Is it a good time to buy an Alesis product? Sure, why not? Just because the company is currently in deep financial trouble and undergoing reorganization does not imply that their existing products have no merit.
Their mature products are well understood, and well supported in the industry. ADATs will continue to sell, so will the Masterlink, and so will their keyboard products like the QS8.1 I just bought a while back. These products *work*, and they aren't dependent upon a rumored/promised vaporware update to fix the Last Great Bug and make them functional.
I don't think that I'd go for one of the new or not-fully-developed products in their line right now, like the not-highly-regarded ADAT/edit interface, or (regrettably)
the HD24. Those products strike me as being pretty immature, and there are no longer going to be development resources focused on them (in the short term, anyway). If the company survives, development may very well be picked back up. If Alesis is broken up, maybe its successors will pick that development up,and maybe not. That does represent a significant risk.
But that's much less of an issue with the mature products: what you see is what you get, and they are not likely to suddenly stop working simply because the parent company is on hiatus.
I have a very relaxed attitude about this because I worked in the MI business for a while, and grew accustomed to waking up every morning and wondering if I still had a job. There are very few MI/pro audio manufacturers that are really what I'd call solid, blue-chip, guaranteed-to-be-there-tomorrow companies: it is a very, very hard business, and the margins can be razor-thin. I've bought, and will continue to buy, hardware from companies that were teetering right on the brink. Or had already gone belly up and had their assets liquidated, ending any chance of a recovery.
Bottom line for me: if the stuff works well and sounds good, I don't really care if the parent company still exists or not. If the stuff is immature and has glitches all over it, or requires obvious work in the software department to implement promised functionality, I probably wouldn't buy it even if the parent company was _sound_. Just because they haven't gone belly-up *yet* doesn't mean that they will still be there tomorrow to support (or complete!) any given product. The MI/pro audio business is a crapshoot, support-wise: ask anyone who ever bought a Chroma.
Anyway, having said that: I'm actually thinking of buying another Masterlink for the location-recording rack, so that I don't have to take my main one out of the main room.
All capital expenditures involve risk. Laying out the green for a mature product that works is *much* less risky than laying it out for the hot new rigged demo flavor-of-the-week product from NAMM, believe me.
Just my opinion: your mileage may vary. Caveat Emptor very definitely rules here!