Also forgot to mention that i only need something basic, load enough for club gigs.

thanks 

I can't say enough good things about GabKits. 

I have their OTS 1x12 Combo Cabinet loaded with a Warehouse Guitar Speakers ET65 for my grab and go rig. 

It sounds excellent with my Strats for SRV tones and for RF sounds with a Les Paul. 

This speaker has a full, smooth combination of highs, mids and lows.  Excellent all around tone with power handling to keep up with 50 watts.

I have tried a number of speakers with my OTS and have settled on this for my go to 1x12 set up.

Here's why:

EVM 12L - Expensive, heavy.  I see why some people love these, but it is definitely not for everyone.  Very "in your face" tone which is somewhat typical of high wattage speakers.

JBL D120 - Hard to find.  Pricey.  Nice.  A bit too much headroom and not enough compression for my taste.

Celestion Vintage 30 - Great all around speaker.  One of my favorites.  Plenty of highs if you want them.  Perhaps a tad light on the lows.

Hellatone 60 - "Broken in" Celestion vintage 30 from Avatar.  Great Bargain.  Another of my faves.  pretty much the same as above, just a little easier to find the same tone at a slightly cheaper price.

Warehouse (WGS) Veteran 30 - Another great deal for the Vintage 30 tone at a reasonable price.

WGS Retro 30 - 75 watt version of the Veteran 30.  Much stiffer sound.  Not for me.

Weber Alnico Blue - In this same vintage 30 ballpark as above.  Excellent top end. Very nice but a bit pricey.

Celestion G12M "Greenback" - Also nice but arguably underpowered for a 50 watt combo.  A little less high end than the above speakers but smooth with nice breakup.  The sound clips of the WGS version of this speaker also sound real good.

WGS ET65 -  You see the Celestion G1265 mentioned a lot on these forums.  I decided to try one of these just to see how it sounded and was surprised that it became my number one choice for using just one 12 inch speaker.  It sort of has the character of the Celestion G12H30 and Vintage 30 combination that I use in my Koch Multitone 2x12.  This combo has become very popular with a number of builders for mixed 12s in a 2x12 cabinet, and with good reason.

I had expected to like one of the Vintage 30 type speakers the best, but when It came down to picking just one speaker for the combo cabinet, this turned out to be the one that delivered the goods for me.

If you don't like the Celestion G12-65 I don't think you would find an knockoff to be any better. Some people really like the 65 and Robben Ford uses them, so there's that endorsement. I have 2 x12 cab with them and they sound muffled with the OTS to me. I use a 2x12 cab with a Vintage 30 and A G12H30 and it sounds excellent. The V30 brings out the highs and mids while the G12H30 sounds great by it self , but gives a full punchy low to the combo. I also have a 1 x12 cab with an Eminence Wizard which is basically a 75W version of the G12H30. It sounds every bit as good if not better than the G12H30 and at 103dB, it holds its own when combined with the 2x12 cab. Just two of many possibilities.

IS there an amp cabinet builder as good and cheap as Sourmash, in the West? Mr. Mash's prices are a whole lot less than others I've seen and what's with Mojo charging so much? 
Specifically to the chassis–head cab match, what cab is best for the Ceriatone 2202 – the 15" wide OTS or 21" 18w size like the one housing the Lead & Bass 20?