All information is taken directly from the manufacturer's websites. Feel free to correct any of this information.

General

Shoptask Bridgemill Eldorado

Harbor Freight 3-in-1

Smithy Granite 1324 CNC

Dimensions (machine/crate) 60x32x44 / 62x34x44 62x24x39 52x22x39 / 50x23x43
Weight (machine/shipping) 1150 /1200 lbs (bench included) 640 lbs shipping 660/770 lbs
Motors 2 x 1 hp 110V (number ?) 3/4 hp 110V 1x 1.5hp DC (voltage?)
Price $2,295.00 USD $1,199.99 USD $3,499.00 USD
Power Feed X Axis X and Y axis X Axis
Gearbox Quick Change BELT Quick Change Quick Change
Mill/Drill Swivel locked with 5th column support 360 degrees 360 degrees
CNC Compatible? Yes...bolt on No Yes

Lathe

Swing (bed/table) 17" / 8" 17" / unreported 13" / 7.5"
Dist. Between Centers 24" 31.5" 24"
Spindle Lock 3 bolt unreported Camlock D1-4
Spindle Bore 1 1/8" unreported 1 1/8"
Headstock Taper MT4 MT4 MT4
Tailstock Taper MT3 MT2 MT3
Thread Pitches SAE (10-112) Metric (.075-3) SAE (38 pitches) Metric (22) SAE (7-52) / Metric (.35-6.5)
Cross Slide Travel 10" 7.75" 7 5/8"
Speeds 80-2160 RPM 160-1360 RPM 50-1500 RPM
Chuck Size 5" 3 Jaw w/ 6" 4 Jaw included 5" 3 Jaw ???

iMill

Mill Head Taper R-8 R-8 R-8
Table Dimensions 19 x 9 18.5 x 6.25 17.75 x 6.5
T Slot Width changed on new model unreported 7/16"
Spindle Diameter 2.75" unreported 2 7/8"
Working Height/travel 4-14" / 3.25" spindle to table=12" / 4.25" 4-13 3/8" / unreported
To Faceplate 16" unreported 7"
Speeds 125-2400 RPM ???-3000 RPM 600-3000 RPM

Drill

Chuck Capacity 1/2" unreported 3/8"
Chuck Arbor R-8 / JT33 R-8 / JT33 R-8 / JT3
Spindle to Table 14" spindle to table=12" 13 3/8"
Spindle to Column unreported unreported 9.5"