The yellowjacket is based off the nano fury design that in my personal testing can reach up to 3ghs wth enough cooling. The Antminer u1 can reach 2.2ghs and it considerably cheaper. The U1 should have the same coverage of mining software compatibility as the nanofury does as I have sent both types of the devices off to mining software developers.
I can confirm that ANTminer U1 units will co-exist with Block Erupters when running BFGminer 3.10.0
https://bitcointalk.org/index.php?topic=23768.msg4714379#msg4714379And with some of the configuration mentioned in that post, the ANTminer U1 units are overclocked to 2.0Ghash without throwing any errors. Requires a decent to good hub like an Anker, D-Link or Orico that has a PSU with enough AMPS to power the amount of the devices you want to plug in...
My D-Link D-HUB will power 4 BEs and my Orico is currently powering 5 BEs and one ANT U1, and I have a small USB3 hub powering the remaining two ANT U1s.
Here is my current output in BFG 3.10.0:
bfgminer version 3.10.0 - Started: [2014-01-27 15:15:12] - [ 0 days 02:19:06]
[M]anage devices [P]ool management [S]ettings [D]isplay options [H]elp [Q]uit
Connected to stratum.mining.eligius.st diff 16 with stratum as user 1QEquFYkmCF
Block: ...ad1e55c8 #282801 Diff:2.19G (15.70Ph/s) Started: [17:29:04]
ST:19 F:0 NB:19 AS:0 BW:[257/ 61 B/s] E:23.91 I: 153uBTC/hr BS:8.6k
13/14 46.0C | 13.34/14.29/16.38Gh/s | A:3255 R:7+0(.18%) HW:321/1.0%
--------------------------------------------------------------------------------
AMU 0: | 1.34/ 1.07/ 1.97Gh/s | A: 406 R:0+0(none) HW: 0/none
AMU 1: | 0.94/ 1.09/ 2.03Gh/s | A: 353 R:0+0(none) HW: 0/none
AMU 2: | 1.23/ 1.05/ 1.97Gh/s | A: 390 R:0+0(none) HW: 0/none
BFL 0: 48.0C | 7.51/ 7.50/ 7.42Gh/s | A:1505 R:6+0(.33%) HW:294/2.0%
BES 0: | 400.0/399.6/335.5Mh/s | A: 63 R:0+0(none) HW: 3/.46%
BES 1: | 400.0/397.7/341.7Mh/s | A: 66 R:0+0(none) HW: 5/.75%
BES 2: | 400.0/399.3/312.4Mh/s | A: 60 R:1+0(1.4%) HW: 1/.16%
BES 3: | 400.0/397.5/337.6Mh/s | A: 53 R:0+0(none) HW: 1/.15%
BES 4: | 397.2/399.0/353.0Mh/s | A: 70 R:0+0(none) HW: 3/.44%
BES 5: | 400.0/399.4/322.2Mh/s | A: 80 R:0+0(none) HW: 4/.63%
BES 6: | 399.8/398.7/322.7Mh/s | A: 79 R:0+0(none) HW: 4/.63%
BES 7: | 400.0/398.4/313.9Mh/s | A: 57 R:0+0(none) HW: 3/.49%
BES 8: | 400.0/398.6/351.0Mh/s | A: 74 R:0+0(none) HW: 3/.44%
--------------------------------------------------------------------------------