I really don't understand the trekking pole market. It seems to me there are four classes of poles:
1. Actually Ultralight (pair- 8-12 oz, $100-200): Mostly small shops like Gossamer Gear; also Black Diamond Distance and a pair by Helinox (Big Agnes brand?) which work like the BD Distance poles.
2. Lightweight (pair- 16-24 oz, $25-125): Most poles seem to be in this range. Take your pick: cork, foam, rubber coated plastic handles; straight or angled handle; twist, flick or some other locking mechanism.
3. "Ultralight" (pair- 16-20 oz, $125-175): This is the bit I don't follow. Why spend $50 more on a pair of CF poles and save literally an ounce on the non-carbon version? Unless there's some reason you'd use carbon fiber over aluminum other than weight, these appear to me mostly a marketing category. :P
4. Heavy - not worth talking about.
My cost-effective favorite is the Outdoor Products Latch Lock poles. Most folks here seem to get them at Walmart, for $12/pole, or $24/pair. Recently picked up a second pair at Walmart $12/pair- not sure if they're being discontinued at Walmart or by OP. Same mechanism as the Black Diamond Flick Lock, with the same patent number to boot. 19 oz for the pair.
After using the first pair of OP Latch Lock poles for a year and a half, I tried out two pair of BD poles that have been recently coming up on SAC a lot lately- the BD Trail Cork Ergo ($45) and the BD Contour Elliptic ($55). I sent the Trail Cork Ergos back to SAC after a week- no subjective improvement for me over the OP poles. Tried the BD Contour Elliptic and am very happy- very strong poles and none of the ground strike vibration/twang I've had with every pair of cylindrical poles I've used.