I'll stick to my Plastic Soldier Company ones anyday for a fast build, spruced up with bit from various other manufacturers and a couple or RB brass barrels
Indeed, the muzzle brakes on the PSC models are ridiculously large.
I'd personally recommend any of the Dragon pre-paints. Other than the PSC Pz IVs which I really don't like at all except as an F1, for which it is very good (apologies to Gunbird - though I note you mention sprucing up - for H models, I've scrapped off the right side turret front port, a number of things on the turret top, the signal ports on the driver and co-driver hatches, the ports on the turret sides, and replaced the commander hatch - even then if you are anal like I am, the turret roof is the wrong shape
), I don't have any experience with other fast builds.
If you have the time and if you enjoy modelling, I cannot endorse at least one model of the Revell Panzer IV H enough. It does have nearly 200 parts IIRC, including link and length track.