I have a wonderful Giro II with a single arm, though I believe it could also take another arm if you wanted. It comes on a lightweight yet very stable ash tripod. I used it to mount my TV-101 that I just sold. It was preferable to the Gibralter mount that suffers from a 10 degree "Dobson's hole" at the zenith. Also, the Gibralter becomes quite difficult to manually track over 130X. This Giro combo manually tracks easily and smoothly at even 300X. This outfit comes with a 7.4 or 11 lb counterwgt.
Included is a Bogen padded tripod bag.
Also comes with an adapter that allows a TV-101 clamshell to attach to the Giro arm.
$400. Sure beats a new $650 Gibralter.