Don't do PDX tubeless. Have them on pit wheels with latex tubes. Specialized Terra Pro set up tubeless on IronCross wheels have been flawless for the past two seasons. Heard there may be tubeless MXP's or PDX's out sometime in the future...
I took Bill out at Holster when my not-recommended PDX tubeless conversion failed in a corner. Don't do it. Clement does offer a legit PDX tubeless this year. Also MXP and BOS. I've mounted mine but haven't run 'em in the real world yet. But they're out of your stated budget at $70 a pop. Kenda makes some affordable tubeless tires, but yeah, what @Delish said: PDX. It's a fine jack of all trades tire. The MXP won't shed mud if it gets tacky and you'll slide like a Zamboni on a hill.
I raced my Kenda Happy Mediums tubeless this weekend. Stoked. I'm 210 and can't corner for sh*t, ran mine at 36/38, banged rim all day w/nary a burp. Take a look at the Kommando X Pro SCT. $35 and built to run tubeless.
I meant the running Clement non-tubelesst tires on a tubeless setup. I have no knowledge or experience with their new "legit" tubeless casing. There has to be an MC Hammer reference in there somewhere...2-bliss legit or quit?
I found the only PDX downside to be going up technical hills. Specifically the bubblecross hill with the roots after the beach. I ran back to back with PDX and MXP in the back and the MXP was way, way better. Center knob on the PDX didn't allow the tire to dig in and grab roots. *maybe* lower pressure would help. Then again I'm a slow Cat 5 racer.
If I could choose only one tire it would be PDX but been happy running PDX front and PDX/MXP rear depending on the location. I'd like to get something like the LAS but can't justify buying a pair of tires for a dry course when I'm slow.
Do the tubeless PDX/MXP tires actually exist in the wild? If I didn't have a collection of tires I'd jump to those.
Sorry, rapid fire here. BTW, The Stan's NoTubes CX team was using the standard "non-tubeless" version of the Kenda tires, not the SCT ("tubeless") ones. More supple and lower weight. The SCT versions weight about 50g more per tire than the regular ones