Level Creation with Tilesets

Been playing around more with construct, and currently after looking at things unsure how I would go about making a level more smoothly than manually copying instances of a solid object.

Read some things and heard about a CSV plugin being able to use an array to generate the level for a tileset, but also heard arguments against using all tiles due to performance issue.

Would it be best to use a giant(depending on level size) tiled background image for all the "background" tiles and then have only the solid ones in an array to be generated?

The software I use to generate my tiles is a great one called Pyxel Edit ( pyxeledit.com ) which has options to export the tileset as a png file along with a text or XML document of their placements

Text format (no rotation/flip information as of yet, hopefully next update)

dl.dropbox.com/u/73774002/plains1%20test.txt

XML format (includes rotation/flip information)

dl.dropbox.com/u/73774002/plains1%20test.xml

(-1 means no tile placed there)

Sorry if the post is a bit long winded, so I'll just reiterate things succinctly here:

1) Performance wise: Better to use all tiles or tile-solids with a large background image?

Edit:Apparently tiled backgrounds blur when resized while sprites do not, and sprites do no blur if webGL is enabled. So I guess all tile sprites is the way to go

2) Instructions: How would I use a CSV file to make a level map ; or the XML file?

Okay tried out some things and I figure I'm doing something wrong as it's not turning out how it should.

using CSV2ARRAY plugin by Rex to make a tile array and then converting the value into the animation frame.

The image is supposed to look like this:

i.imgur.com/ofn3g.png

But it just cycles through the tiles until it gets the last one.

EDIT: Forgot to turn animation speed off. Also had to adjust array tileplacement calculations.

Okay getting something weird now. Fixed all my previous issues so far, but CurY and CurX seem to be reversed using a CSV array. The X value has to be CurY and the Y value has to be CurX or else the level is on it's side.