In reply to Oldbro3:
Hi, some good advice given, maybe just add a couple of additions. If mostly trad climbing avoid the temptation for short quickdraws, slings 15cm and less are often perceived as the norm, but short draws have their origins in sports climbing. Equally too many tangly slings and slingdraws may be a little old school also (except long mountain routes, or alpine (excuse the assumption we are talking cragging type rock climbing here)). Short draws in reality increase the likelyhood of gear lifting. For an example my quickdraws are along the following lines.
8 x 20 cm
4 x 25-30cm
2 x Slingdraws
Reduce to 8 ish for short routes,
Consider a couple more for 40+ meter limestone type routes needing loads of small wires.
I might carry 1 shorty on a short route with low first runner. Though in these cases a screwgate direct might be better as the gear is likely to lift when higher on the route anyway.
I tend to go for light (phantoms). But they need to feel right in the hand, and the choice of crab should balance weight, handling etc. I guess my message is not to assume manufacturers make the QuickDraw combo you want. You may also want different crabs on gear/ rope ends for example, as well as different lengths. In short plenty of gear shopping oportunities on a wet day!
Wayne