I've shot the original Crossover, and also the Axe, the Rail, the Reflex Rail, the Mini, the Etek, the Etha, and the Drone. The Crossover is an elite choice out of that group. I would consistently pick it over everything else except maybe a tossup with the Axe and the Drone.
It's fairly efficient, more efficient than an Axe.
It's fairly smooth, smoother than an Axe.
It's very easy to maintain and disassemble. Definitely easier than everything above save the Etek.
Its current competitive price is over $100 cheaper than the Axe, $80 cheaper than the Drone.
This isn't about mech play, but it's mechanical feature is superb. I see the primary function of the mechanical feature being that it makes the trigger more rewarding, it assists with conserving paint, and it doesn't require batteries. I can almost hit the same bps in mech as electro with the Crossover trigger and trigger spring removed. As an electro, it can easily do PSP mode and the available programs give you tons of options. To be fair, what are the drawbacks?
It's made by Tippmann, and players can't get past that. It's surprising how many people have told me that the Axe performs better, when this is objectively false.
It comes in Henry Ford colors - black. The XVR opens that up a bit.
The grips are "meh." Doesn't bother me but surely isn't great grips.
It doesn't have an on/off ASA. The XVR fixes this, but honestly I've been surprised to find it's very easy to add or remove my Ninja bottle without concern of tearing things up.
And the big issue is the trigger. The Axe trigger is just so much better. I tend to play in mech mode because I like the feel of that trigger more and it's all I need for rec ball play, but the Axe trigger is more responsive and comfortable. The newer, replacement Crossover trigger is not worse than the Dye or PE products in my mind, though. Better than the Mini for sure.
It's A5 threaded, and lots of current market underbore barrels and adapters don't work. The XVR fixes this, too.
The XVR gives you a cosmetic and comfort upgrade to the Crossover for the same price as a Drone DX. I don't know that you need any of those, though getting an on/off ASA, toolless grip access, and toolless bolt removal are all nice features. At the $350 price point for the original Crossover, I would run not walk to get that before anything else under $400. Go put it on PSP ramping and embarass a whole bunch of speedball players that think the marker can't keep up with their Axes.
Happiness... is a warm mechanical marker
Mechanical Marker Fan: Azodin Kaos-D / Tippmann Crossover