I did the MojoTone kit. I got the entire kit (incl cab, tubes, speaker), all quality stuff. The whole thing shipped within a couple of days from when I ordered it. The speaker in the kit was a Jensen C12Q. I figured it would do for a while until I could decide what I wanted to replace it with but it sounds great so I left it in.
It was packaged extremely well and all the parts were labeled in indiviual compartments in a plastic parts box. Not much in the way of instructions though, they give you a schematic and a colour coded wiring diagram but there is so much info on the internent about building 5E3 amps. I learned a lot from different websites and videos and incorporated a fair bit of it in my build (grounding schemes, wiring layout techniques and other circuit mods).
The amp worked perfectly from the get-go and is dead quiet. The only issue I had was one of the power tubes' heater filament rattled a bit on low frequency notes. I called MojoTone and they shipped me another set of matched tubes that day. Excellent service. I would buy from them again. They usually have sales during holiday weekends. That's when I ordered mine.