There are many car audio brands that have been and continue to be great. Depending on the need, there are still plenty of car audio brands that I recommend on a regular basis. If you are working to a budget, but have the funds to go active, there can be a ton of bang for your buck in "raw" drivers.
Of the brands I mentioned, here is how some of these products are related to the brands you know. NVX is essentially a "house brand" for Sonic Electronix, though it is sold through other vendors. The JAD line of amplifiers use very similar boards to the Hertz HDP amp line at a much better price. When comparing the 5 channel models, the NVX is 36% of the cost of the Hertz.
SB Acoustics (Sinar Baja Electric) is a speaker manufacturer out of Indonesia. The specific driver that I listed is virtually identical to the Arc Audio Black 6.0 at 20% of the cost. There has been a ton of (probably too much) discussion on this specific topic on this forum and many others. So much so, that I have no doubt it was a contributing factor to the very unique design of Arcs new RS line. It is unlikely you'll be seeing "clones" of those any time soon.
On the Dayton stuff, you aren't likely to see a car audio equivalent, though it has happened. Dayton does have a solid reputation though for providing products with a very high performance to cost ratio.
I 100% support this, especially the dampening budget, the only thing I'd change personally would be the tweeter.
I'd look at the
Tang Band 25-2176S instead since it'll be able to meet the midrange at a lower frequency and has pretty good THD properties for the price. Only reason to pass on them would be if the grill causes mounting issues.
Also I'm not sure how open OP is to a DSP. The soon-to-be-released Dayton Audio DSP-408 is only $149 and would be a great addition. That'd take the total budget to about exactly $2k.
The Tang Band tweeters you mentioned have been my typical recommendation for budget two way installs as well. I brought up the new Daytons in the case because they can be crossed reasonably low (3kHz), are stupid cheap ($25/pair) and are a bit more compact to make installation easier.
If a stand alone DSP like the DSP-408 from Dayton is on the table, it could lead to a less expensive DD unit as well. One of my reasons for suggesting the
AVH-501EX was the active crossovers (even though the amp has them as well). If you don't need the active crossovers at the head unit, you can save nearly enough by going with a lower priced DD to purchase the Dayton DSP. Pretty ridiculous considering the 501 is only $300!